How do fungi play an essential role in maintaining equilibrium in an ecosystem?
a. by forming symbiotic relationships with animals
b. by being parasitic on plants and animals
c. by acting as decomposers on dead plants and animals

mendel's first law states that during the formation of reproductive cells , pairs of hereditary factors for a specific trait separate so that offspring receive one factor from each parent.

explanation:

the fossil record provides evidence of a common ancestor to many species.