There are plenty of plants producing oxygen by photosynthesis.
Also, human's only use 5% of the oxygen in the air in respiration, there is 21% in the air.
Answer:
Heriditary
Explanation:
Heriditary traits are genetic traits that get passed down.
I think the answer is D but I’m not completely sure
The approximately number of earths surface is covered by land is 29 percent
Carbon cycles through ecosystems. ... To release the energy in food, organisms break down the carbon compounds—a process called respiration. Carbon is released and cycled back into the atmosphere as carbon dioxide. When living things die and decay, the rest of the carbon that makes up living matter is released.
