B, as far as we know humans aren't from space
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.
The answers to the pictures shown are
1. (unbalanced) translocation
2. deletion
3. inversion
4. duplication