Answer:
air water and food
Explanation:
all living things need air, water, and food.
D is the answer. A gene is a part of a chromosome.
The natural source of carbon dioxide that was left out is the calcareous shells of organisms. The major metabolic process that was left out is respiration.
<h3>What is carbon dioxide?</h3>
Carbon dioxide is one of the gases that cycle around in the universe. It is an integral part of the carbon cycle. The carbon cycle is a model that depicts the movement of carbon in the ecosystem.
The natural source of carbon dioxide that was left out is the calcareous shells of organisms. The major metabolic process that was left out is respiration.
Learn more about carbon dioxide: brainly.com/question/3049557
mostly collagen and some calcium phosphate
Answer: the camel
Explanation:
because of its adaptation to the desert