Put "Gene Pool" in a sentence

Explanation:

the genetic variation of some plants from their parents results in expansion of the gene pool for a particular species. Scientists have estimated that a gene pool of at least 300 animals is necessary to maintain a healthy tiger population.

I know it is More than A sentence.. But yeah you could shorten it <3

c

explanation:

idk

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg