: Over generations, populations of living things change to better survive in their specific environment. 2. The Human Experience: What It Means to "Feel Alive" What Really Makes Us Feel Alive (And Why We've Forgotten)
: Organisms react to their environment, such as a plant growing toward light or an animal fleeing from a loud noise. : Over generations, populations of living things change
: The ability to maintain a stable internal environment (like body temperature) despite changes in the outside world. : Over generations
: The capacity to produce offspring, either sexually or asexually, to ensure the continuation of the species. either sexually or asexually
: Life requires energy to function. Organisms either produce their own food (like plants) or consume others to fuel biological processes.