I'm confused: Atoms combine to form molecules. Which of the following is another example of organization among living things? Tissues combine to form cells.

Cells combine to form tissues.

Organs combine to form cells.

Organs combine to form tissues.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Isotopes of the same element have differ in their

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.