Question

Which of the following is not a factor which directly affects population density?

• A. predation pressure
• B. food availability
• C. atmospheric pressure
• D. adverse weather

Answer 1

The correct option is C atmospheric pressure

Predation pressure affects population density as increase in predators decreases prey population and decrease in predator population increases prey population.

Food availability plays a significant role in deciding population density as decrease in food availability leads to competition for the limited resources.

At the same time, adverse weather also plays an important role in deciding population density.

While atmospheric pressure may play a role in deciding factors for an organism to survive in a particular habitat, it does not affect population density.