Why does the body need so many organ systems

Answers

Answer 1

Answer: each organ system is specialized with doing only one job.there are 10 major organ systems in the body each of which plays a different role in helping the body work.they all work together as a unit to make sure the body keeps functioning

Answer 2

Answer: Every organ in our body system helps us live! if we were born without a organ, like the small intestines or the muscles, we could die.

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All of the following are true about science except (2 points)it is a body of knowledge.

it can be disproven by philosophy or religion.

it is tested by many scientists over time.

it uses the scientific method.

Answers

The answer is B. it can be disproven by philosophy or religion

hope this helps !

How does the environment influence natural selection?

Answers

Answer:

See explanation!

Explanation:

To answer this, it would be helpful to first determine what natural selection is. Natural selection is a biological process in which species evolve and adapt over time, in order to better fit their environment.

In any ecosystem, there are going to be limited resources. This simply means that species that are most suitable for the environment will survive and have the chance to reproduce.

This means that the environment determines when natural selection happens, but also what it looks like.

This might be better understood with an example:

For example, after several volcano eruptions in a stretch of the desert, the field mice population, over the next generations, gradually became black, rather than their original tan color.

This is because the vast desert sands were replaced with large patches of black volcano rock, so the mice that were previously able to camouflage and avoid detection by predators now weren't able to.

On the other hand, genetically mutated black field mice now had a far greater chance of surviving, and hence the population of field mice gradually became black.

This example illustrates how a change in the environment, caused the process of natural selection and ultimately the characteristic of having black fur to be more advantageous.

Over time, the process of natural selection made it so that the field mice population was black.

Keywords:

Natural Selection

Environment

Genetic Mutations

Population

Answers

The independent variable would be the type of liquid the dependen is the evaporation rates

Select all of the characteristics that define matter. A.) Matter has mass. B.)Matter has volume (takes up space). C.)Atoms and compounds are made out of matter. D.) All matter has the same density.

Answers

Explanation:

Matter is defined as the substance that has mass and occupies space.

This means every matter will have mass and every matter will also have volume as it occupies space.

Every matter is made up of number of atoms as these atoms are the small sub-units that combine together and constitute a matter.

Hence, the statement atoms and compounds are made out of matter is not true.

As density is mass present in per unit volume. Therefore, every matter will vary in density.

Thus, we can conclude that characteristics that define matter are as follows.

Matter has mass.

Matter has volume (takes up space).

Answer:

The answer to your question is: a, b and c

Explanation:

A.) Matter has mass. this option is correct, matter is formed by mass.

B.)Matter has volume (takes up space). this option is correct, matter takes up space.

C.)Atoms and compounds are made out of matter. This option is correct, all atomsand compounds are made out of matter.

D.) All matter has the same density. This optio is wrong, matter of different elements or compounds have different density.

The picture below shows a warm air mass caught between two cooler air masses, What is this type of front called?

Answers

An occluded front forms when a warm air mass is caught between two cooler air masses.

Consider the following reversible reaction. 2H2O(g)<—>2H2(g)+O2(g) What is the equilibrium constant expression for the given system?

Answers

Answer : The equilibrium constant expression will be,

$k_(eq)=([H_2]^2[O_2])/([H_2O]^2)$

Explanation :

The given balanced chemical reaction is,

$2H_2O(g)\rightleftharpoons 2H_2(g)+O_2(g)$

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

The concentrations of pure solids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

So, the equilibrium constant expression will be,

$k_(eq)=([H_2]^2[O_2])/([H_2O]^2)$

Answer: D

Explanation:

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