Nutrients enter the bloodstream during the process of
a) locomotion
b) respiration
c) elimination
d) absorption

How do you date a sample of rock that you suspect as being one of the earliest on earth

Plz ! a frog has a genetic mutation in skin cells that causes part of its skin to turn orange the frog will not pass this genetic mutation onto its offspring because, a. the offspring will inherit skin cells from the other parent. b. mutated skin cells cannot divide and produce daughter skin cells. c. skin cells do not contribute genetic material to sex cells. d. parents do not contribute genetic material to their offspring.

Ecology can best be described as the study of what