i will give brilent to best answer

which of the following statements is true?

all mutations are harmful.
mutations are the only way to add new genes to a gene pool.
in substitution, dna base pairs are deleted or lost during replication.
a mutation in the liver cell of a cat will be inherited by the cat's offspring.

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