What is the liver an example of?
a. a cell
b. a tissue
c. an organ
d. an organ system
a heterotroph is an organism that
a. is a carnivore.
b. makes its own food.
c. eats only other species.
d. gets food from outside itself.

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.