Question

which organism is most likely to be affected by increased turbidity? plants worms frogs alligators

Explanation:

Increased turbidity (cloudiness in water) reduces the amount of light that penetrates the water. Plants rely on light for photosynthesis. If light is reduced due to turbidity, their growth and survival can be severely impacted. Worms (assuming soil - dwelling, but if aquatic, still less light - dependent than plants), frogs, and alligators are more heterotrophic (depend on consuming other organisms for energy) and not as directly dependent on light for their primary energy - gathering process as plants.

Answer:

plants