In both cellular respiration and photosynthesis, the enzyme ATP synthase is utilized to help make ATP. The movement of what ion through this protein facilitates the production of ATP?

The body is protected against harmful flu viruses by

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve