Study the equation for photosynthesis. A scientist notices an increase in the glucose
production in the plants he is studying. What are the
possible reasons? Check all that apply.
6CO2 + 6H2O
Light energy
→ Cg H12O6+ 602
Chlorophyll
The plant was exposed to more intense light
The plant was exposed to less intense light
The plant absorbed more carbon dioxide.
The plant absorbed less carbon dioxide.
The plant absorbed more oxygen.
The plant absorbed less oxygen.

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

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.

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution