Answer:
limiting factors
Explanation:
The ecological optimum represents the value of the factors within the ecological valence at which the life processes of a species take place best. The upper and lower limits of an ecological valence are its maximum and minimum. Beyond these limits, physiological processes are interrupted and death occurs.
Answer:
inherited
Explanation:
Phenylketonuria is a(n) inherited disorder, meaning that it is passed from generation to generation via DNA.
This image is a partial lunar eclipse. The moon is only showing partially, so it's not total, and the brighter side is showing.
The answer is organ systems I believe