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They cannot get the nitrogen they need from the atmospheric supply. WHat?

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Q: Why is free oxygen a problem for many organisms?
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Deforestation kills many organisms that produce oxygen. What oxygen-producing organisms would remain if all the forests were destroyed?

plankton


What living thing does not need oxygen to live?

Anaerobic organisms do not require oxygen to survive. On earth, those organisms are limited to many types of bacteria and obligate anaerobes.


How many atoms in nitrogen and oxygen?

2 nitrogen and 4 oxygen ,,,,,,NO Problem


Do all organisms need air to survive?

All living organisms need water to survive, because they have cells. With air, not all living organisms need air. Some forms of bacteria do not need oxygen to live, and others can't stand oxygen.


Deforestation kills many organisms that produce oxygen. What oxygen-producing organisms would remain if all the forests were destroyed?

plankton


Deforestation kills many organisms that produce oxygen. What oxygen producing organism would remain if all the forest were destroyed?

plankton


Fermentation is carried out regularly and not only during oxygen emergencies by what organisms?

Many Fungi && Bacteria


How is it possible that the amount of oxygen in the atmosphere stays at a constant 21 percent when there are so many organisms using oxygen to breathe?

Oxygen is being renewed constantly by the process of photosyntesis which absorbs carbon dioxide and converts it into oxygen. The rate of photosyntesis is higher than the amount of respiration, so the amount of organisms will not make oxygen dissapear.


How did earth's organisms change during the first period of Paleozoic era?

increased oxygen in the atmosphere caused the extinction o many single-celled organisms.


What can burn in an oxygen free atmosphere?

Many things. Titanium burns well in both oxygen and nitrogen.


Many small aquatic organisms move oxygen and carbon dioxide through their skin by the process of?

Diffusion


How many elements are common with living organisms?

CHON - the most common are oxygen, hydrogen, carbon, and nitrogen.