The main function of the respiratory system is to –


A. filter body fluids to remove waste products from the bloodstream.


B. send signals in the form of hormones to the body to control growth, reproduction, and metabolism.


C. rapidly communicate specific information using electrical impulses.


D. exchange gases, mostly carbon dioxide and oxygen, between the body and the atmosphere.

Answers

Answer 1
The answer is d I believe
Answer 2
The answer is D. Exchange gases, mostly carbon dioxide and oxygen, between the body and atmosphere!

Related Questions

On a summer's day, beach sand will feel, and be, much hotter than the adjacent water due to the sand's lower thermal conductivity.
true or false?
T-T

Answers

Answer:

true. good luck, you need it!

Explanation:

The answer to the question is true

Which two organisms share the least number of derived characteristics?

Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee

Answers

Shark and champanzee

Answer:shark And chimpanzee

Explanation:

Both of them are less Similar than the others because the others live on land in sharks live in water and most of their characteristics are very different

Do you think that photochemical smog levels are high during the winter or during the summer? Explain.

Answers

Answer:

Use this: I think the photochemical smog levels are higher during the summer do to the increase in car usage and pollution. Studies show that more people use cars in the summer. In addition, the hot, musty, humid air in the summer can significantly increase pollution effect.

Explanation:

What is the force called that is applied to an object and it's NOT opposite and/or equal?

Answers

i think the answer would be velocity.

Answer:

velocity

Explanation:

1.In this environment, which trait is adaptive for the birds


2. Did the birds choose to have the adaptive trait? (yes or no)

3.Sherman suggests that reproduction always creates individuals with adaptive traits. Does this seem correct? Why or why not?

Answers

Answer:

1.Natural selection is the mode of evolution that makes living things well-suited (adapted) to their environments. This mechanism has sculpted the beaks, feet, and plumage of birds over millions of years, making these animals more successful in their environments.

2.yes

3.

Explanation:

Im sorry only 1, 2 I can answer!

But hope it helps you!

You can report me if you want!

Which of these are vestigial structures?
A. the sharp spines of a cactus
B. the wings of a butterfly
C. the hip bones found in some spees of snake
D. the thick fur and layer of fat of some mammals in cold climates

Answers

Answer:

your answer is C

Explanation:

La respuesta es c lo que el dijo

A student uses a lever and fulcrum to lift a rock off the ground.

Which option describes when potential energy is converted into kinetic energy during this process?


a. when the lever is wedged beneath the rock but before it has been lifted

b. when the student presses down on one side of the lever to cause it to move

c. when the rock rests on the ground without the lever

d. when the rock rests above the ground

Answers

Answer:B

Explanation: I know this because kinetic energy is when something is moving and potential energy is when something is not moving and the energy is being stored so it has you are pushing on the other side moving the object it is transforming the potential energy also known as stored energy into movement also known as kinetic energy

B is the correct answer

Match the following items.
1.
uses a lens to gather and focus light
refracting telescope
2. separates starlight into wavelengths
radio telescopes
3. pick up faint-lighted stars
spectrograph
4. see binary stars
giant refractors
5. see behind nebulae dust
giant reflectors

Answers

Answer:

1-uses a lens to gather and focus light- giant reflectors

2-separates starlight into wavelengths- spectrograph

3-pick up faint-lighted stars- radio telescope

4-see binary stars- refracting telescope

5-see behind nebulae dust- giant refractors

Explanation:

is it correct?

(a) What are three ways in which the atmosphere is important to life on Earth? (b) How would the amount of carbon dioxide in the atmosphere change if there were no plants? (c) How would earth be different without the atmosphere?

Answers

Answer:

How is the character Batnik in “Too Fast” similar to Pitys in "Pan: God of the Wild"?

Both defy orders from their fathers.

Both die due to the jealousy of a god.

Both are enchanted by the skills of another.

Both are lured to their deaths by music.

Explanation:

Bones, lungs, and the liver are the most common places for cancer cells to spread, or "metastasize." Once in the bone, these cancer cells can form new metastatic tumors.

...

Bone metastasis is more likely with cancers such as:

Breast.Prostate.Lung.Kidney.Thyroid.

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