Which of the following correctly describes the impact of an abiotic factor on the population dynamics of an ecosystem?
A- Organisms that compete for the same resources will keep each other from over populating.
B- A parasite that invades a host can reproduce and cause a decline in the host species population.
C- Herbivores will not be able to deplete the plants and other resources in an ecosystem due to predation.
D- Seasonal variations in temperature and precipitation can cause some of the individuals in a population to die.