Carbon has been converted to carbon dioxide and escaped into the atmosphere.
Diamond is a mineral composed of only Carbon in which its atoms are arranged in a crystal structure.
Diamonds (pure crystalline carbon C) heated strongly in the presence of oxygen will react with the oxygen to form carbon dioxide.
C ( diamond ) + [tex]O_{2}[/tex] ( air ) → C[tex]O_{2}[/tex]
Therefore, the carbon which forms the diamond, has been converted to carbon dioxide and escaped into the atmosphere
To know more about diamonds
https://brainly.com/question/9286031
#SPJ4
State the Second Law Of
Motion
Why is the expected stretching absorption of the c=o bond 1685 cm-1 for the structure i and 1715 cm-1 for structure ii?
Compared to compound 2, compound 1, the C to O double bond has more single bond characteristics.
How do double bonds develop?When two atoms share two electron pairs to create two covalent connections, they create a double bond; when they share three electron pairs to create three covalent bonds, they create a triple bond.
Describe Double Bond:A double bond, as opposed to a single bond, is a covalent link formed between two atoms that involves four bonding electrons. The majority of double bonds, including those in alkenes, are created when there are two carbon atoms present.
What does a double bond look like?A sigma and a pi bond are always present in a double bond. Carbon dioxide is a common instance of a double-bonded chemical. Double bonds are a structural feature of organic substances like ethene, also known as ethylene, methanoic acid, and acetone.
To know more about Double Bond visit:
https://brainly.com/question/16626126
#SPJ4
If narrow sense heritability for flowering time is 0.6 what will the average time to flowering be in the next generation?
Narrow sense heritability = ratio of additive genetic variance to the total phenotype variance
It is used more in practical because it is easily calculated and gives good estimate of broad sense heritability
heritability is
[tex]h^{2} = }\frac{v_{a} }{v_{p} }[/tex]
[tex]v_{a}[/tex] = variance in genotype
[tex]v_{b}[/tex]= variance in phenotype
Genotype variance : It is one of genetic parameter that determine effectiveness of selection process in plant breeding.
Phenotype variance: It determines whether that trait has the ability to respond to natural or artificial selection.
Heritability estimates range in value from 0 to 1. If H = 0 there is no genetic variation in which all variation in the population comes from differences in the environment experienced by individual.
To know more about narrow sense heritability :
https://brainly.com/question/16796585
#SPJ4
6. Read the following statements. If the italicized word is used correctly,
answer "correct." If the italicized word is not used correctly, rewrite the
statement with the correct word.
a. Taylor's weight is 65 kilograms.
b. I went on a diet and my mass decreased.
c.
I went to the Moon and I lost mass, even though I didn't lose any of
my matter.
The following statements have italicized word, and has 2 correct statement and 1 incorrect statement.
a. Taylor's weight is 65 kilograms. : Its correct.
b. I went on a diet and my mass decreased. : Its correct.
c. I went to the Moon and I lost mass, even though I didn't lose any of my matter. : Its incorrect.
What is weight?The weight is a term shows the mass of the object and the gravity working on it. Example is that a person who feel heavy in earth that same person feel very light on moon cause the gravity will work on that object verry small in comparison to earth.
How can we say that the third statement is incorrect?a. Taylor's weight is 65 kilograms. It is a complete sentence. So its a correct statement.
b. I went on a diet and my mass decreased. : Its correct. Its also a complete sentence. So its a correct statement.
But, c. I went to the Moon and I lost mass, even though I didn't lose any of my matter. This sentence is incorrect because the mass of the person remains same in the moon but the gravity become lesser in the moon so he felt lighter.
So, according to the theory the statement is incorrect.
The correct statement would be:
c. I went to the Moon and I lost weight, even though I didn't lose any of my matter.
Learn more about weight:
https://brainly.com/question/28651870
#SPJ9
Ax a x = 26 m/s2 m / s 2 , ay a y = 10 m/s2 m / s 2 . find the vector's direction.
Given,
[tex]Ax =26 m/s^{2} \\Ay = 10 m/s^{2}[/tex]
As we know that slope of any line passing from (x,y) point has the slope as [tex]\frac{y}{x}[/tex] i.e. Tan [tex]\alpha[/tex]
Vector's Direction can be calculated by [tex]\alpha[/tex] = Tan⁻¹ [tex]\frac{Y}{X}[/tex] ,
where [tex]\alpha[/tex] is the angle with the horizontal X-axis.
therefore,
[tex]\alpha[/tex] = Tan⁻¹ [tex]\frac{10}{26}[/tex]
[tex]\alpha[/tex] = 23.375°
The vector's direction is the angle that the vector makes with the horizontal axis, i.e. with the X-axis. The direction of the vector is given by turning the angle of the vector around its tail to the east counterclockwise.
Therefore, the vector's direction for the given vector is 23.375° from the X-axis i.e. the vector Ax = 26 m/s2, Ay= 10 m/s2 points towards the North-East direction.
To know more about Vector's Direction,
https://brainly.com/question/12887326
#SPJ4
The __________ weight is affected by the buoyancy force.
A-actual
B-apparent
C-floating
D-mass
The Floating weight is affected by the buoyancy force.
What cause the weight Buoyancy force?
As we clearly know that in buoyancy force the weight or any other object will float over the surface of the water and this force is known as buoyancy force. The reason behind the Buoyancy force is that the object seeming lighter in water.
The Buoyancy force can be define as the upward force exerted by the fluid on any weight or any object placed in it. The Buoyancy force is directly proportional to the density of the immersed fluid. The Buoyancy force is also proportional to the volume of the object immersed in the fluid.
So we can conclude that the floating weight is affected by the buoyancy force.
Learn more about Buoyancy Force here: https://brainly.com/question/12788506
#SPJ1
Venus is observed to orbit the sun every 0.62 years. what is the semi-major axis of venus's orbit in au?
Venus is observed to orbit the sun every 0.62 years so the semi-major axis of venus's orbit is 0.73 au.
What do you mean by orbit?Celestial mechanics uses curved trajectory objects to describe orbits, such as a planet's orbit around a star, a natural satellite's orbit around a planet, or an artificial satellite's orbit around a planet, moon, asteroid, or Lagrange point. A circle, a whole circle's revolution, or a range of experiences are all examples of what is meant by an orbit. As an example, consider the earth's orbit around the sun. An illustration of how long an orbit or full circle around takes is the 365 days it takes the earth to travel around the sun. The planets are kept in their orbits by the gravity of the Sun. Since no other force in the Solar System can halt them, they remain in their orbits.
To know more about orbit, click here:
https://brainly.com/question/7439931
#SPJ4
The following conversion equivalents are given: 1.0 m = 100 cm 1.0 in = 2.54 cm 1.0 ft = 12 in if a bin has a volume of 1.5 m3, the volume of the bin, in ft3, is closest to?
The volume of the bin in ft^3 is determined as 53 ft3
CalculationGiven,
1m = 100cm ⇒ 1cm = [tex]10^{-2}[/tex]
1in = 2.54 cm = 2.54 x [tex]10^{-2}[/tex] m
1ft = 12in = 12 x 2.54 x [tex]10^{-2}[/tex] = 30.48 x [tex]10^{-2}[/tex] m
⇒ 1m = 1/30.48 x [tex]10^{2}[/tex] ft
Volume = 1.5[tex]m^{3}[/tex]
= 1.5 x [tex](1m)^{3}[/tex]
= 1.5 x (1/30.48 x [tex]10^{2}[/tex] ft)^3
= 52.97ft^3
V= 53 ft^3 (nearly)
To know more about conversion, visit:
https://brainly.com/question/28297175
#SPJ4
If the cable at a is pulled with the velocity of 12 m/s, what is the resulting speed of weight b?
The resulting speed of weight B is 4m/s
Here we have the end of the cable A pulled with the speed of 12m/s
To find the speed at which block B move:
At the top of pully. We have length at A is Sa and length of B is Sb.
The length from the top pulley to the small pulley which is held by the bar that Lint we built label it H
The pulley system made of only one chord, so we need only one equation to represent the rope.
Sa +Sb +(2Sb -h) = l
When the rope is pulled at block B the whole part moves up.
Sa + 3 Sb = L+2h
In order to find the velocity, we take derivative of the above equation.
here we get
Va + 3Vb = 0
Va = 12m/s
vb = -12/3 = -4m/s
negative sign shows that block is going against the direction. That is upward direction.
The resulting speed of weight B is 4m/s
To know more about speed
https://brainly.com/question/14272340
#SPJ4
An airplane moving horizontally at 150m/s drops a package from an altitude is 490m. how long does it take the package to reach the ground? how far horizontally from the spot over which it was dropped does the package land?
pls help me. “ how does this poem illustrate the importance of observation in the scientific method?” from the elephant poem PLEASE HELPPPP
The six blind men and elephant poem illustrates how observation is important to understand the subject and how scientific observations are affected by our own perspectives.
In the story, six blind men from Indostan were made to feel an elephant, but they could only touch one part of it like the tusk or the feet. As a result, each man's perception of what the elephant felt like varied. But since they had all felt the same elephant, all of their opinions were accurate.
In science, observation is vital. Scientists employ observation to gather and record facts, which enables them to create and then test their own hypotheses and ideas, just like in the poem where each individual came to his own conclusions. This is why it is common that different scientists reach different conclusions for the same experiment.
To know more about The blind men and the Elephant refer:
https://brainly.com/question/18149489
#SPJ1
Complete the sentences to describe the difference between static and dynamic equilibrium.
An object in equilibrium has a net force of
. Static equilibrium describes an object at
having equal and balanced forces acting upon it. Dynamic equilibrium describes an object in
having equal and balanced forces acting upon it.
To complete the sentences, we have
An object in equilibrium has a net force of zeroStatic equilibrium describes an object at rest having equal and balanced forces acting upon it. Dynamic equilibrium describes an object in motion having equal and balanced forces acting upon it.What is equilibrium?Equilibrium is the phenomenom in which no net force acts on an object.
What is Static Equilibrium?Static equilibrium is equilibrium is which the body is at rest and has equaland balanced forces acting on it.
What is Dynamic Equilibrium?Dynamic equilibrium is equilibrium is which the body in motion and has equaland balanced forces acting on it.
So, to complete the sentences, we have
An object in equilibrium has a net force of zeroStatic equilibrium describes an object at rest having equal and balanced forces acting upon it. Dynamic equilibrium describes an object in motion having equal and balanced forces acting upon it.Learn more about equilibrium here:
https://brainly.com/question/27965641
#SPJ1
In the mass spectrum of pentane, the presence of a peak with m/z = 15 is most likely to the detection of:________
In the mass spectrum of pentane, the presence of a peak with m/z = 15 is most likely to the detection of a methyl radical cation.
The m/z ratios of the ions contained in a sample displayed against their intensities form a mass spectrum. The height of the peaks in a mass spectrum denotes the relative abundance of the various components in the sample, and each peak in a mass spectrum displays a component of distinct m/z in the sample.
Only when a molecule has been transformed into a gas-phase ion can a mass spectrometer calculate the mass of the molecule. In order to do this, it gives molecules an electrical charge and transforms the flow of electrically charged ions that results into a proportional electrical current that a data system can subsequently read.
Learn more about mass spectrum:
https://brainly.com/question/17368088
#SPJ4
What is the frequency (s-1) the light from a laser with a wavelength of 615 nm? enter your answer with three decimals and no units.
The frequency of light from a laser is 4.878 x10^ 14 s-1 hertz
Stepsv= c/ lambda
c= 3.00 x10^8 m/s
nm into meters
615nm (1m/ 1x10^9 nm) = 6.15x 10^-7 m
use frequency formula
v = 3.00 x10^8 m/s // 6.15 x10 ^-7
v = 4.878 x10^ 14 s-1 hertz
The frequency of light from a laser is 4.878 x10^ 14 s-1 hertz
What do you mean by frequency?The quantity of waves that pass a set location in a predetermined period of time is known as frequency. Therefore, if a wave passes through in half a second, the frequency is 2 per second. The frequency is 100 times per hour if it takes 1/100 of an hour.
learn more about frequency here
https://brainly.com/question/254161
#SPJ4
At what temperature does a process with [delta]h = 20. kj and [delta]s = 300. j become spontaneous? (give the answer in 3 sig figs)
The Temperature at a process with ΔH and ΔS become spontaneous is 66.6k
Gibbs free energy - It can be defined as that can be used to calculate the amount of work done performed by a closed system at constant temperature and pressure.
It's symbol is G.
Gibbs free energy equation is given as
ΔGΔH−TΔS
where
ΔG = Gibbs free energy.
ΔH = Enthalpy change.
T = Temperature in Kelvin.
ΔS = Entropy change.
ΔH= 20kJ = 20000J
ΔS= 300J/K
if ΔG<0, process is spontaneous
if ΔG>0, process is non spontaneous
if ΔG=0, process is in equilibrium
To find the temperature at which the given reaction becomes spontaneous, the minimum T value for which we obtain a negative value of the Gibbs free energy change is
ΔH−TΔS > 0
T > ΔH/ΔS
We have ΔH=20kJ=20000J
ΔS= 300J/K
T > 20000/300
T> 66.6K
The Temperature at a process with ΔH and ΔS become spontaneous is 66.6k
To know more about temperature:
https://brainly.com/question/14263343
#SPJ4
If you throw a ball straight upward at a speed
of 10 m/s, how long will it take to reach zero
speed? How long will it take to return to its
starting point? How fast will it be going when
it returns to its starting point?
Explanation:
hey! what's up dude
the answer of this will be 1. 1 sec
2. 2sec
3. 10 m/s
hope you find help
now the reson for this will be
let's look in 1st part
we will use v=u+at
where v will be zero at highest pont u is 10m/s
we can take g as 10 or 9.8
so
0=10-10t
so it becomes
-10/-10=t
so 1 sec will be the answer
in 2nd part same time will be taken to come back so total time will be 2 sec
3rd part we can use v=u+at
where we have to find v, u=10 g=-10 and t=2 sec
now v=10-20 so v= -10 m/s
since in question it's asking abaout speed and as speed is a scaler quantity so answer will be mode of -10 so it becomes 10m/s
hope it's help you..
What is the difference between a scalar and a vector? a scalar has whereas a vector has categorize the quantities based on whether they are scalars or vectors.
The difference between a scalar quantity and a vector quantity can be found below.
What is a scalar and vector quantity?A scalar quantity is a quantity that has magnitude but not direction.
On the other hand, a vector quantity is a quantity with both magnitude and direction.
Examples of scalar quantities are;
SpeedTemperature LengthTime MassExamples of vector quantities are;
ForceMomentumElectric fieldAccelerationAngular velocityLearn more about vector and scalar quantity at: https://brainly.com/question/3482586
#SPJ1
The main circuits on the system board that carry data are called the _________.
The main circuits on the system board that carry data are called the data bus.
What is a data bus?
A system within a computer or device that transports data typically consists of a connector or wired connection. Along with the development of personal computers and other hardware, several data bus types have also changed. Web dictionaries define a bus as a vehicle that transports numerous passengers from one location to another, however in this situation, data is also involved. A bus is a connection between two or more devices that needs to convey data or have a communication path. The communication link between a computer system's processing unit and memory unit serves as a standout example.Learn more about the data bus with the help of the given link:
https://brainly.com/question/4965519
#SPJ4
what is the momentum of a 6300-kg elephant walking 0.11 m/s
Momentum of the elephant is 69.3 kg-m/s
Momentum is a property of a moving body by the virtue of its motion and is a product of mass and velocity.
As per Newton's second law of motion,
momentum= mass x velocity
Mass of the elephant is given as 6300kg
Velocity of elephant is given as 0.11 m/s
Therefore,
momentum = 6300 x 0.11
69.3 kg -m /s
For further reference:
https://brainly.com/question/904448?referrer=searchResults
#SPJ9
Find the cost of excavating a space 84 ft long, 42 ft wide, and 9 ft deep at a cost of $39/yd3. (simplify your answer completely.)
The cost of excavating a space of 84 ft long, 42 ft wide, and 9 ft deep is $45864
Information about the problem:
Space long= 84 ftSpace wide= 42 ftSpace deep= 9 ftCost by yard3 = $39/yd3Total cost= ?To solve this problem, we have to state the equation using the information of the problem:
Calculating the volume of the total space:
space volume = space long * space wide * space deep
space volume = 84 ft * 42 ft * 9 ft
space volume = 31752 ft3
By converting the volume from ft3 to yd3, we have:
31752 ft3 * (0,037037 yd3 / 1 ft3) = 1176 yd3
Calculating the cost of excavating the volume space:
Total cost = space volume * cost by yard3
Total cost = 1176 yd3 * $39/yd3
Total cost = $45864
What is volume?It is the space occupied by a body, it is calculated by multiplying its dimensions, for example: length, height and width.
Learn more about volume at: brainly.com/question/12628341
#SPJ4
A shopping cart given an initial velocity of 2.0 m/s north undergoes a constant acceleration of 3.0 m/s2 north. what is the distance the cart moved after the first 4.0 s of its motion?
Following the initial 4.0 seconds of travel, the cart moved 32m.
What is an equation of motion?Physicists use equations of motion to describe how a physical system behaves in terms of how its motion changes over time.
The behavior of a physical system is described by the equations of motion in more detail as a collection of mathematical functions expressed in terms of dynamic variables. These variables typically comprise time and spatial coordinates, but they could also have momentum components. The most flexible option is generalized coordinates, which can be any useful variable that is a component of the physical system. In classical mechanics, the functions are defined in a Euclidean space, while curved spaces are used in relativity instead. The equations are the answers to the differential equations describing the motion of the dynamics of the dynamics of a system are known. The amount of motion changes according to the strength of the force and does so in the direction of the force's applied straight line.
To know more about equations of motion, click here:
https://brainly.com/question/14355103
#SPJ4
The density of a 4.0 cm3 sample of a metal is 11.3 g/cm3. what is the density of 8.0 cm3 sample of the same metal?
The density of 8.0 cm³ sample of the same metal is 5.65g/cm³.
The density of a sample or a body is defined as, the density of a body is the amount of mass per unit volume . It is denoted by ρ. & its unit is kg/m³.
Density ρ = M/V
where, M is mass and V is volume of the body.
Solution,
Given here,
The density ρ₁ of volume V₁ & the density ρ₂ of volume V₂ of same metal therefore,
ρ₁ = 11.3 g/cm³
V₁ = 4.0 cm³
V₂ =8.0 cm³
ρ₂ =?
ρ₁ × v₁ = ρ₂ × v₂
ρ₂ = ρ₁ × v₁ /v₂
ρ₂ = (11.3 g/cm³× 4.0 cm³)/8.0 cm³
ρ₂ = 5.65 g/cm³
The density of sample of the same metal is 5.65 g/cm³
To know more about density
https://brainly.com/question/14376469
#SPJ4
A fluid has a density of 1040 kg/m^e. if it rises to a height of 1.60 cm in a 1.50 mm diameter capiallry tube, what is the surface tension of the lquid. assume a contact angle of zero.
The calculated surface tension is 9.36 × (10^-2) N/m.
A liquid's density is a gauge of how heavy it is relative to the amount being measured. The liquid that weighs heavier is denser if you weigh two liquids with similar volumes or amounts. A substance that is less dense than water will float if it is gently introduced to the water's surface.
H equals ((2 cos)/ g r)
2γ = h ρ g r 2γ = 1,8 (10^-5) (1040) (10)
γ = 9 (1040) (10^-4)
γ = 9.36 × (10^-2) N/m
Because it enables us to predict which compounds will float and which will sink in a liquid, density is a crucial notion. As long as an object's density is lower than the liquid's density, it will often float.
Learn more about density here-
https://brainly.com/question/15164682
#SPJ4
Find the magnitude of this
vector:
18.4 m
-28.7 m
magnitude
The magnitude of this vector:
18.4 mi-28.7 mj is 34.09m
Given:
vector is
18.4 mi-28.7 mj
Magnitude =[tex]\sqrt{18.4^2+28.7^2}=34.09[/tex]
This magnitude of a vector formula summarizes the distinct vector measures along the x-axis, y-axis, and z-axis. It is represented by the symbol |v|. A vector's magnitude is either a positive number or zero, and it can never be negative. Let us finally understand the magnitude of a vector formula by considering a few solved cases.
A vector's magnitude is equal to its length. The magnitude of the vector an is indicated by the symbol a. For further information on vector magnitude, see the introduction to vectors.
This article deduces formulas for the magnitude of vectors in two and three dimensions in terms of their coordinates. The magnitude formula for a two-dimensional vector a=(a1,a2)
To learn more about motion of gravity from the given link:
https://brainly.com/question/14033610
#SPJ9
Answer:
34.09178
Explanation:
This is the correct answer for Acellus
Your friend john is 20.0 meters away from you and he is running away from you at 5.0 m/s. you sprint at 7.0 m/s to catch up. how long will it take you to reach him? _______ s
If John is 20.0 meters away from me and he is running away from me at 5.0 m/s. I sprint at 7.0 m/s to catch up. Then, I will take 10 seconds to reach him.
We know that,
Speed = Distance / Time
Time = Distance / Speed
Given that,
My speed = 7 m/s
John's speed = 5 m/s
Distance I need to cover to catch up John = ( 20 + x ) m
Distance John will cover before I catch up to him = ( x ) m
Since the time taken by both of us to reach that point is same,
( 20 + x ) / 7 = x / 5
100 + 5x = 7x
2x = 100
x = 50 m
Time required = Distance / Speed = 50 / 5
Time required = 10 seconds
It will take me 10 seconds to reach John.
To know more about Distance
https://brainly.com/question/28224010
#SPJ4
Suppose the link speed between the source and destination is 100 megabits (mb) per second. approximately how long will it take to send a 12 megabyte (mb) file?
Approximately About 1 second will take to send a 12-megabyte (mb) file.
What is link speed?It refers to the fastest rate at which data can travel from a wireless client to a wireless router over a wireless link. At the application layer, user actions like file transfers and web content browsing take place. Compared to the rate at the physical layer, the rate at the application layer will be substantially lower.
What Internet Speed Is Best for Using Several Devices? According to the FCC, the best ISPs for households with two or more connected devices and moderate to heavy internet usage should have download speeds of at least 12 megabits per second (Mbps). It is advised to use 25 Mbps while using four or more devices.
Anywhere from 25 to 100 Mbps is considered to be an excellent internet speed.
Up to 2 devices can stream, browse the web, and check email at speeds of 25 Mbps. A few more individuals can stream in HD or even 4K, stream music, play games, surf social media, and work from home at speeds of 50 to 100 Mbps.
To know more about link speed visit:
https://brainly.com/question/18568130
#SPJ4
If 21,847 • 10^18 electrons pass through a wire in 12 s, find the current
Answer:
I = Q / t = N e / t
I = 21,847E18 * 1.60E-19 Coul / 12 sec = 2.18E22 * 1.60E-19 / 12 sec
I = 2.18 * 1.60 * 10^3 / 12 amps = 291 amps
Calculate the density of the substance. a sample of a substance has a mass of 27.3 grams and a volume of 7.0 centimeters3. the density of this substance is grams/centimeter3.
Which situations are necessary components for malpractice to occur?
a. The risk of injury must be predictable.
b. A "breach of duty" is when a professional fails to uphold a level of care.
c. There must be a standard of care in place, and the practitioner must assume responsibility for the patient.
d. There must be a clear link between the treatment received and the harm.
What is malpractice?Malpractice, commonly referred to as professional negligence, is defined as "an incident of carelessness or incompetence on the part of a professional" under tort law.
The following professionals might be the target of malpractice claims:
Medical professionals: If a doctor or other healthcare practitioner does not exercise the level of care and competence that a similarly situated professional in the same medical field would deliver under the circumstances, a medical malpractice claim may be made against them.
Lawyers: Failure to provide services with the amount of competence, care, and diligence that a reasonable lawyer would use in the same situation may be grounds for a legal malpractice claim.
To know more about malpractice, visit;
https://brainly.com/question/25441985
#SPJ4
Which period of the mesozoic era had the lowest temperatures & co2 levels, and had large tropical forests that lacked flowering trees (but later formed extensive coal deposits)?
The Mesozoic era's Jurassic epoch featured the lowest CO2 concentrations and temperatures, as well as vast tropical forests devoid of flowering trees.
The correct option is B.
What features did the Jurassic Period have?Dinosaurs thrived for 180 million years during the Jurassic Period, which was their heyday. Huge herbivorous and carnivorous sauropods like the 35-foot-long Allosaurus and the 87-foot-long Diplodocus evolved. Imagine yourself sprinting as quickly as you can, and that's how big these beasts were.
What led to the Jurassic Period's demise?Some have proposed that the Triassic-Jurassic extinction may have been brought on by an asteroid or comet impact, similar to an extraterrestrial object that is thought to have contributed significantly to the Cretaceous-Paleogene extinction about 66 million years ago as shown by the Chicxulub crater in Mexico.
To know more about Mesozoic era's visit:
https://brainly.com/question/11936655
#SPJ4
Which period of the Mesozoic era had the lowest temperatures and CO2 levels, and had large tropical forests that lacked flowering trees (but later formed extensive coal deposits)?
a. Triassic
b. Jurassic
c. cretaceous
