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.
which is more likely to be the cause of down syndrome the egg or the sperm?
The egg
To have a definite shape and volume
They are able to travel in a vacuum at the same speed.
Hope it helps
Protein can be reversed to make glucose so the answer is protein
