Which of the following is NOT a part of Darwin’s theory of natural selection? a. individuals in a population vary
b. organisms tend to over-reproduce themselves
c. there are limited resources for which individuals compete
e. variations possessed by individuals of a population are inherited
d. modifications an organism acquires during its lifetime are passed to its offspring

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.