The answer is D yayayayay
Answer:
D. by taking in oxygen and cleaning out waste gases like carbon dioxide.
Explanation:
The respiratory system cleans out your carbon dioxide and replaces it with oxygen.
It increases ecosystem productivity, protects fresh water resources, and provides nutrient storage and recycling
Answer:
The structure of one or more proteins produced by the organism.
Explanation:
Genetic mutation can also can cancer 5 - 10% of the time.
