Which of the following leads to evolution by natural selection a. low rates of mutation b. an unlimited amount of resources c. a population that is perfectly suited for its environment d. a population that produces more offspring than can survive

Which statement best describes the relationship between observations and conclusions? a) observations are based on conclusions b) conclusions are based on observations c) observations and conclusions both depend on research d) neither conclusions nor observations depend on research.

Which sequence correctly shows the path of carbon dioxide during repiration?

When plants use sunlight to make food, the energy of sunlight is