After a large volcanic eruption, it may take many years for the ecosystem surrounding the volcano to return to the equilibrium that existed before the eruption. Which of these is a natural process that directly works to return ecosystems to their equilibrium?

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

How does the human body lever work?