Help me with this question if your a good person and luvs your family

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?