Answer:
Should be D. Breathable gases
Explanation:
The carrying capacity of an environment is the maximum population size of a biological species that can be sustained by that specific environment, and abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
Answer:
the number of big fish would increase
Explanation:
when theres a bunch of small fish, that is more food for the big fish ao the population of big fish will increase
A C and D yes it occurs in life