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Humans and animals breathe to supply the blood with oxygen, and to deliver oxygen-rich blood to all parts of the body. We need to breathe so we have a constant supply of oxygen in our lungs, that can be absorbed by our body. The oxygen is used by cells for respiration, to produce energy.
We need to breath because if we don't we will die.
We need to take the oxygen in, and let the carbon dioxide out.
We need to breath because if we don't we will die.
We need to take the oxygen in, and let the carbon dioxide out.
People breathe because we need a few things to survive, like food and water, and fresh air and oxygen is one of them.
People breathe to survive. The human body has to have oxygen in order to survive so if people did not breathe, they would die.
Humans breathe for cellular respiration, meaning for us to live. Otherwise, people would die, because about all the cells in our bodies need oxygen for energy.
You have to so you can get air to your lungs to keep your heart beating and pumping blood to your body to survive.
Because if not we would die. Breathing is an involuntary action that is controlled by the primitive part of your brain. "in with the good, out with the bad."
Wiki User
∙ 6y ago
Wiki User
∙ 13y agobecause oxygen gives you some of the supplements that u need to live. it is needed throughout celluiar respiration system. you retrieve your air through your lungs and it is colected by the red blood cells and transferred throughout your body. at the lungs you also exchange oxygen with carbon dioxide which is what the plants need to live along with water, sunliight, and soil. in a sense plants breathe just like mammals. it is an exchange of carbon dioxide and oxygen between the mammals and plants. one will most likely not survive without the other.
in short terms you will die without it.
Wiki User
∙ 13y agoBecause humans and other animals evolved to use it. You could breathe methane if you had evolved to breathe it. Plants use CO2 and expire oxygen as waste. Also a more direct answer is that You need oxygen to turn food into energy that your body can use.smd
Wiki User
∙ 13y agoAll the animals on Earth need to breathe the oxygen in air to stay alive. The air we breathe on is Carbon Dioxide. It's because bodies use oxygen to make energy for living and growing.
RISHI RISHI GANESAN
Wiki User
∙ 12y agothey need air, because they need the gases in air. Animals need the oxygen in the air and plants need the carbon dioxide.
Wiki User
∙ 12y agobecause without oxygen you wouldn't be able to breathe and that would kill you :P
Wiki User
∙ 10y agoAir is about 21% oxygen, and brain cells die if they are deprived of oxygen for more than a few minutes.
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The need for air is?
we need air to breath and supply oxegen to our blood.
Why do air sacs need to have a rich supply of capillaries?
They need a lot of blood.
When do you need air?
when you get hurt the air would make all the blood go away.
Can you survive from hunger by swallowing air?
No. You need nutrients to live. Air is just good for your blood.
Does heart rate increases after exercise?
whe you're doing an exercise cells need more air and for to get air they need to wait antil blood will bring it to them, so the blood starting to run faster and the heart have to pump blood quicker, so your heart beat quicker.
What five things you need to stay alive?
water, food, shelter, air and blood
Do you need oxygen to aerate the lungs and to cleanse the blood?
No, you need AIR (which contains 20% Oxygen) to areat the BLOOD in the lungs and to carry away CO2. No, you need Kidneys to cleanse the blood.
Why does air sacs need rich supply of blood vessel?
Air sacs need a rich supply of blood vessels to facilitate diffusion. A large number increases the surface area available to pick up oxygen and get rid of CO2.
How does exercise increase blood oxygenation?
During aerobics exercise, lungs take in air and transfer oxygen to the blood, which is then pumped by the heart to the muscles that need it.
Does everything in your body need air?
its not so much the air that you need. but you do need something that is in it. oxygen is like a food for cells. the blood carys the oxygen around the body. there is also carbon dioxide (C02) in air. and that's what you breath out.but not everything, but most things.
Why do WE NEED BLOO?
if u mean blood then it is to get air to all parts of our body so that it will continue working.
How come when you hold your breathe you soon need to breathe?
Because we need to,our lungs needs so does our blood needs oxygen. Let me explain to you (what i remember from bio class) There r "ballon" like things in our lungs which holds the air air and passes it to our heart and our heart passes it to our blood
