When you notice that someone has unusually blue eyes, you've noticed their
a. hybridization.
b. genotype.
c. phenotype.
d. allele.

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a. the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

Which element is found in both dna and proteins

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled