What is an adaptation? Pick one.
a structural, behavioral, or physiological trait that enhances an organism's ability to survive and/or reproduce
the process during which light energy from the Sun is used to convert carbon dioxide and water into oxygen and food
the process through which organisms with advantageous structures or behaviors are naturally selected over organisms that do not possess these traits
a physical or behavioral characteristic that has stood the test of time and is still present after generations of other evolutionary changes