Complete the following sentence. To reduce the chances of resistant insects evolving from overexposure to BT-modified crops, farmers producing these crops are required to also plant varieties of the same crops.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.