Which process that occurs in living organisms is similar to the burning of fossil fuels?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.