Question

a mountain lion population recently experienced a drop in population size. which of the following would best describe the limiting factor that is involved?
a change occurred in the genetic variability
the deer population experienced a rapid decline due to a parasite
mountain lion hunting experienced an increase in restrictions.
the population of trichinella, a parasite, experienced a decline

Explanation:

• Option 1: Genetic variability change is an internal factor, not a limiting factor for population size in this context.
• Option 2: If the deer population (a food source for mountain lions) declines due to a parasite, it directly affects the mountain lion population as a limiting factor (lack of food).
• Option 3: Increase in hunting restrictions would likely help the mountain lion population, not cause a decline.
• Option 4: Decline in a parasite (Trichinella) population would not be a limiting factor for mountain lions.

Answer:

The deer population experienced a rapid decline due to a parasite.