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Answer:

The paulownia is a native of the temperate forests of China.

The difference between density dependent and density independent factors in terms of their effects on population growth and common examples are described below.

Limiting factors are conditions that limit the growth or abundance of a population of organisms in an ecosystem.

There are two types of limiting factors that can affect population growth and they are as follows:

Density dependent factors are factors that regulate the population growth by mechanisms controlled by the size of the population while density independent factors affect population growth irrespective of size of the population.

Density dependent factors limit the growth of a population as the population increases while density independent factors limit the population growth irrespective of whether there is an increase in population or not.

Examples of density dependent factors are as follows:

Examples of density independent factors are as follows:

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The correct answer is the independent variable is one that you manipulate, control, or vary to investigate its effects and the dependent variable that being tested and measured in an experiment .

The simplest way to determine which variable in your experiment is the Independent Variable (IV) and which is the Dependent Variable (DV) is to put both variables in the sentence below in the correct order. "A change in the DV is caused by the IV." It is impossible for DV to cause any change in IV."

Example: Independent and dependent variables You plan a study to see if changes in room temperature affect math test scores. The temperature of the room is your independent variable. You change the temperature of the room by making it cooler for half of the participants and warmer for the other half.

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The animal virus may cause different kinds of diseases like HIV/AIDS, COVID-19 which can harm the human body and may causes death.

Animals can be harmful for the spread of the virus to human body, because  sometimes the animal carry dangerous virus and they can be spread to the human body in the form of different diseases. This held when the human touches the animal and after that he or she does not washes its hand properly. This animals virus is known as zoonotic diseases or zoonoses.  Zoonotic diseases are caused due to the dangerous and harmful germs like virus, parasites, and fungi.

The animal virus can cause different types of diseases to human body like Blastomycosis, Trichinosis, Histoplasmosis and many other diseases. They also can caused illness, AIDS.

So we can conclude that the animal virus may cause different kinds of diseases like HIV/AIDS, COVID-19 which can harm the human body and may causes death.

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Answer: 3 Oxygen atoms

Explanation:

The subscript next to "O" is 3. Therefore 3 oxygen atoms. See attached

Answer:

It is 0.5 Azocasein it is not the rest

The 0.5 % Azocasein is the substance used in enzyme assay. So the correct option is A.

A molecule with which an enzyme interacts is known as a substrate. A substrate is put into the active site of the enzyme, which is where weak bonds between two molecules might form. The substrate reacts under the pressure of the enzyme, forming an enzyme-substrate complex that is the product of the intended reaction.

The bonds that form between the substrate and the enzyme are what induce the conformational shift, or shape change, in the enzyme. The resulting shapeshift, which either pulls molecules together or splits them apart, is what exerts pressure on the substrate.

A substrate is a material that an enzyme uses in an enzymatic process. By reducing the activation energy required for the process, enzymes operate as biological catalysts to speed up chemical reactions.

In a chemical reaction, an enzyme is a protein that catalyzes the transformation of a substrate reactant into a product. In general, individual enzymes have a variety of substrates and may be tailored to a variety of reaction intermediates that are a part of a larger process.

Therefore the correct option is A.

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Answer:

Top

Explanation:

mass increases from left to right and from top to bottom.

so lighter ones are at the top

Answer: d

Explanation: minerals are non-life

Explanation:

2n² means 2 * n²

where, n = 0, 1, 2, 3, ... so on

for example

n = 3

2(3)²

2 * 3² = 2 * 9 = 18

A steroid is an organic molecule having four rings organized in a certain chemical configuration that is physiologically active. The two main biological roles of steroids are as signaling molecules and as critical elements of cell membranes that affect membrane fluidity. Numerous steroid species can be found in fungi, animals, and plants. Lanosterol (opisthokonts) or cycloartenol are the two sterols used to make all steroid compounds in cells (plants). Squalene, a triterpene, is cyclized to produce lanosterol and cycloartenol. The most known examples of steroids acting as signaling molecules are steroid hormones. Steroids and phospholipids are also parts of cell membranes. Cholesterol and other steroids make membranes less fluid.

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A hypothesis is an assertion or claim regarding a population's characteristics.

A method called hypothesis testing is used to examine assertions about a population's characteristics.

It is based on sample data and probability.

When performing a scientific study, there is often some existing knowledge, possibly from prior work or from an established theory. We wish to determine the plausibility of this assertion. The fundamental concept of a hypothesis test is as follows:

State what you believe to be true.

A hypothesis is a well-informed assumption that can be put to the test through observation and disproved if it turns out to be untrue, but you can't show convincingly that the vast majority of hypotheses are true because it's typically not feasible to look into every scenario.

Imagine that you get a significant breakout in the morning after eating a lot of greasy foods. You might be curious as to whether consuming greasy meals and developing acne are related. You put up the theory that pimples are brought on by eating oily food.

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Answer:

cells can divide without order and accumulate genetic errors that can lead to a cancerous tumor .

An extensive research has been done to understand the role of environmental factors in the process of unregulated cell division. Four scientists including Higginso, Muir, Doll and Peto  in 1977 tried to explain that 80 percent of all types of cancer were caused due to environmental factors.

However, modern studies suggest that unregulated cell division results from both, environmental factors as well as genetics. Radiation, toxins and certain chemicals or drugs can lead to the development of cancer following unregulated cell division.

For example Ultraviolet (UV) radiation from the sun can cause various types of skin cancers including Basal cell carcinoma, Squamous carcinoma as well as Melanoma.

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Firstly, It's Amino acids. And moving to the answer now. This contains the hydrogen atoms, the carboxylic group, and the amine group.

A basic amino group (NH2), an acidic carboxyl group (COOH), and a specific organic R group (or side chain) are the three organic molecules that make up an amino acid. Alpha-amino [alpha-amino] carboxylic acid is referred to as an amino acid informally. An amino and a carboxyl group are both joined to the core carbon (C) atom, known as the -carbon, in every molecule. A hydrogen (H) atom and the R group typically fulfill the remaining two bonds of the -carbon atom. The building components of proteins are amino acids. The great majority of chemical processes that take place in cells are catalyzed by proteins. They give cells a lot of their structural components and aid in fusing cells into tissues.

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Answer:

They affect the populations above and below the trophic level, because if they eat all the largemouth bass, the species in the trophic level below would start growing more.

Explanation:

The statement " Four factors which need to be balanced properly for a cell in order to be healthy are temperature, chemical content, volume as well as pressure" is 'True'.

The given statement is 'True' as a healthy cell functions best at normal physiological temperature which comes out to be 98.6 Fahrenheit in warm-blooded animals including human beings. Increased temperatures can increase the fluidity of cell membranes which can alter the permeability of the cell. Due to this some harmful substances can enter the cell.

The chemical contents of the cell comprises of four basic organic constituents, i.e. protein, lipid, nucleic acid and carbohydrate. These biomolecules play a crucial role in carrying out various cellular functions. Volume and pressure also need to be balanced properly in a cell to be healthy.

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GRESA method stands for given, required, equation, solution and answer.

We are required to solve the question according to the GRESA method. However, the question has multiple sub questions and hence we will solve each one of them separately.

Question 1:

Given:

Net force of 200N

initial velocity is 0 m/s

final velocity is 40 m/s

time is given to be 10 s

Required:

We are required to find the mass of the cart.

Equation:

By using Newton's second law of motion,

F= m x (v-u)/t

Solution:

By putting all the values, we get:

200N = m x ( 40 -0 ) / 10

m = 200 /4  = 50kg

Answer:

The weight of the cart is 50kg.

Hence option (c) 50kg is correct

QUESTION 2:

Given:

mass of ball = 0.4 kg

force of hitting = 16N

Required:

We are required to find the acceleration of the ball after hitting

Equation:

Using Newton's law of motion,

F = m x a

Solution:

By putting all the values, we get:

16 = 0.4 x a

a =16/0.4 = 40 m/s^2

Answer:

Hence option (B) 40 m/s^2 is the correct answer

QUESTION 3:

Given:

mass of papaya =3.5kg

acceleration of papaya = 2.2 m/s^2

Required:

We are required to find the net force applied

Equation:

Using Newton's law of motion,

F = m x a

Solution:

By putting all the values we get:

F = 3.5 x 2.2

  =7.7 N

Answer:

The external force applied is 7.7 N to the left

Question 4:

Given:

net force = 300N

acceleration = 0.750 m/s^2

Required:

We are required to find the mass of the crate

Equation:

By using Newton's second law of motion,

F= m x a

Solution:

By putting all the values, we get:

300 = m x 0.750

m = 300/0.750

    = 400kg

Answer:

Hence the weight of crate is 400kg

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Answer: Scientists find new evidence in their studies.

Explanation: It's correct on EDG

Since the individual is charged with criminal mischief and imprisoned for graffitiing a highway overpass. The punishment is an example of a formal sanction.

Formal sanctions is known to be any actions that can be  authorized, formal, and are put into effect by the use of a powerful force. Formal sanctions is made up of punishments and rewards from authorities, such as those given by law enforcement as well as educational institutions.

For example, if a person is caught speeding in your car, the sanction that will be brought against that person a fine they have to pay.

Therefore, Since the individual is charged with criminal mischief and imprisoned for graffitiing a highway overpass. The punishment is an example of a formal sanction.

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Answer: Soil

Explanation: hope this helps!!

In order to maintain homeostasis, the desert rat:

Homeostasis is the process by which a living organism maintains a fairly constant internal environment.

Homeostasis refers to the mechanisms by which a organism  responds to internal as well as external environmental changes.

All living organisms possess a mechanism for maintaining homeostasis.

A typical organism that maintains homeostasis is the desert rat.

The desert rat lives in the very harsh environment of the desert where there is extreme heat.

In order to maintain a fairly constant internal environment, the desert rat lives in burrows built in the desert. Also, the desert rat maintains a nocturnal lifestyle coming out in the dark when the temperatures have reasonably cooled.

Also, the desert has little fur so that the body can easily lose heat.

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Answer:

Catalysts are integral in making plastics and many other manufactured items. Even the human body runs on catalysts. Many proteins in your body are actually catalysts called enzymes, which do everything from creating signals that move your limbs to helping digest your food. They are truly a fundamental part of life.

Answer:

the answer is D!!

yes it's correct

Answer: Unemployed. They were all home relaxing basically retired.

Explanation:

In this way, the exergonic reaction of ATP hydrolysis is coupled with an endergonic reaction.

ATP hydrolysis is an exergonic chemical reaction because this releases energy, which is coupled to an endergonic reaction inside the cell that needs the energy to perform metabolic functions such as, for example, chemical reactions involved in cell differentiation.

In conclusion, In this way, the exergonic reaction of ATP hydrolysis is coupled with an endergonic reaction.

Complete Question:

Fill in the blank. In this way, the exergonic reaction of ATP hydrolysis is ____________ to an endergonic reaction.

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The diatoms organism is the subject of the article, and they are utilized as insecticides since they are abrasive against pests.

The correct option is B.

Diatoms are a type of photosynthesising algae that can be found practically wherever that is moist, including soils, freshwater bodies of water, and the ocean. They contain a siliceous skeleton called a frustule. Diatoms are categorized as eukaryotes, which distinguish them from prokaryotes like bacteria and archaea by having a nuclear envelope-bound cell nucleus.

The following are some prominent diatoms: A mucilaginous layer covers the elongated, elliptical pinnular diatom. The genus is a member of the order Naviculales, class Bacillariophyceae, and family Pinnulariaceae.

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The complete question is-

Nelly was reading about ecological pesticides. She found a website that said that skeletons of some organisms settle as sediments in the ocean. They are then used as pesticides because they are abrasive against pests. Which organism is the article discussing?

a-dinoflagellates

b-diatoms

c-green algae

d-euglenoids

e-amoeba

Answer:

Diseases such as anxiety and depression affect more women than men. Plus, osteoarthritis and sexually transmitted diseases are more severe in women, and they are more likely to die after a heart attack.

Explanation:

Major life transitions such as pregnancy, motherhood and menopause can create physical and emotional stresses for women. Negative life experiences – infertility and perinatal loss, poverty, discrimination, violence, unemployment and isolation – also impact on women's mental health and wellbeing.