Question

algae growth typically increases in polluted lakes.
the chemicals that are most likely responsible for increases in algae growth in lakes are
a. oxygen and carbon dioxide
b. nitrates and carbon dioxide
c. oxygen and phosphates
d. nitrates and phosphates

Explanation:

Algae growth in polluted lakes is often due to eutrophication, which is caused by excess nutrients. Nitrates and phosphates are key nutrients that promote algae growth. Oxygen is not a nutrient that causes algae blooms, and while carbon dioxide is used in photosynthesis, the main nutrients driving excessive algae growth are nitrates and phosphates. So option D is correct.

Answer:

D. nitrates and phosphates