<span>The food chain describes who eats whom in the wild. Every living thing—from one-celled algae to giant blue whales—needs food to survive. Each food chain is a possible pathway that energy and nutrients can follow through the ecosystem.</span>
When an ion or a molecule passes through a membrane without something facilitating, or encouraging that passage, such as a protein does. What drives it is the force of the diffusion itself instead.
Genetic variance increases the chance of survival because through an enlarged gene pool, the chances of successful mutations is higher, as well as the favoring of successful traits.
An example of this is in birds, some species with large gene pools in a single geographic location will favor males with longer tail feathers, therefore that trait will become more common and increase the chance of survival through improved genetics within offspring.
The anwers is false of this quation
