AP BIOLOGY

Detailed explanation-1: -Living organisms keep their internal environments within a certain range (they maintain a stable internal condition), despite changes in their external environment. This process is called homeostasis, and is an important characteristic of all living organisms.

Detailed explanation-2: -All living organisms evolve and adapt to their environments through a process called natural selection. Adaptation is the term for a population that changes over time. Specific traits-coded by genes-influence an organism’s chances of survival and reproduction.

Detailed explanation-3: -An adaptation is a characteristic that helps an organism to survive in its environment.

Detailed explanation-4: -All living things are able to respond to stimuli in the external environment. For example, living things respond to changes in light, heat, sound, and chemical and mechanical contact. To detect stimuli, organisms have means for receiving information, such as eyes, ears, and taste buds.