Gene pool
Sum of a population's genetic material at a given time.
The term typically is used in reference to a population made up of individuals of the same species and includes all genes and combinations of genes (sum of the alleles) in the population.
I would say shape, hardness, and texture
Answer:
A
Explanation:
Since the water occupies a bigger space the organisms that reproduce in freshwater have a bigger area to reproduce.
Anatomical structure, possible diet, and reproduction evidence.
Im pretty sure its
A. Number of Organisms
B. Amount of Matter
A million sorrys if im wrong :(