I'm pretty sure it's Cells
Habitat destruction is the key one out of all of these. Animals being kept at the zoo for research are usually endangered or vulnerable species which is doing more good than harm to them. Legal hunting of animals is most likely for rabbits, deer, and a stabilized population in the wild. Habitat destruction can destroy many populations and cause loads of damage. An example of that would be the Australian wildfires at the start of 2020.
I believe the answer to this is substitution <span />
Answer:
carbon cycle
Explanation:
The chemical cycle which involves the process by which plants make their own food is the carbon cycle. The carbon cycle refers to the movement of the element carbon between living things, the atmosphere and the Earth. The process of Photosynthesis makes it possible for plants to utilize carbon (iv) oxide in the manufacture of glucose.