0
Why isn't the oxygen in the earths atmosphere used up by the breathing of humans and other animals?
Wiki User
∙ 14y ago
It is constantly being replenished by plants, from the giant 100mtr trees to the tiny algae. These plants convert, by photo-synthesis, the carbon-dioxide breathed out by animals back into oxygen in the atmosphere.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Is oxygen found outside earths atmosphere?
Yes. Earth's atmosphere is about 21% oxygen. Without it, the vast majority of life we see, including humans, could not exist.
How do earthquake activity change the earths surface?
By slowing down the earths rotation but will not make effect to humans .
No Humus is all dead animals nutrients. Microbes and earthworms can help the humus.?
yes. they help humans food grow which helps the humans by not starving them. Without food humans could not live.If your thinking about animals, animals need plants too, so without plants humans could not live.
Why couldn't humans exist if there were no animals on earth?
Humans couldn't survive on earth if there aren't any animals, because humans cannot live purely on a vegetarian diet. Plus, if there were no animals, most plant species might die off because animals help most plants grow and pollinate and such.
Which arthropods are helpful to humans?
Arthropods are invertebrate animals such as crustaceans. An arthropod that is useful to humans is the lobster, as it can be eaten.
How is carbon extracted form the atmosphere?
by animals and humans breathing out
Why isn't the oxygen in the earths atmosphere is not used up by the breathing of humans and other animals?
As you breath in oxygen your body exchanges it for carbon dioxide which is the air you breath out. As you and all other oxygen breathing animals do that, the earths plants to the opposite they breath carbon dioxide and release oxygen. That is why it is important to protect the worlds plants. We need each other.
What impact does earths atmosphere have on humans?
Lots.
Why are meteor showers not harmful to humans?
They burn high in the earths atmosphere.
Why the quality of air in the earths atmosphere largely depends on human activities?
The quality of air depends upon humans. What humans do will reflect in the atmosphere.
How do humans effect earths natural cycles?
with co2 and gassed rissing into the atmosphere
How do animals add carbon to the atmosphere?
Just like humans do they breathe it out. They then remove carbon when they eat. This is part of the natural carbon cycle, and does not add extra CO2 to the atmosphere.
What percentage of all of earths water is in a form that is useable to humans and land animals?
3 percent is useable to humans and land animals
Are animals counted as people?
Actually, humans are counted as animals, humans aren't the main living things on earth. Humans are mammals, just like the other breathing, furry, animals out there.
Which of the atmosphere's gases is most importsnt to humans and animals?
Oxygen
What greenhouse gas produced by humans activities has dramatically increased in earths atmosphere?
CO2; Carbon Dioxide
What of these does not produce carbon dioxide animals breathing humans breathing plants using light or burning fossil fuels?
plants
