Which of the following describes describes a response to external stimuli? a: a rabbit runs away from a fox that is chasing it b: a woman drinks water when she is thirsty c: a boy eats food when he is hungry d: a person yawns when oxygen levels in the blood are low

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

Drag each label to the correct location on the chart. match the function to the type of tissue