Answer:
An allele (UK: /ˈæliːl/, /əˈliːl/; US: /əˈliːl/; modern formation from is one of two, or more, forms of a given gene variant.
The answer could possibly be natural selection or survival of the fittest
Formed by erosion created by seafloor spreading
RIVER DELTAS ARE formed by erosion created by seafloor spreading
NOT:
caused by the movement of tectonic plates areas of infertile, rocky soil
The answer is c because they are easily destroyed and washed away during food storage preparation
Part one is a semi-permeable membrane that separates the two solutions and allows bi-directional transport