Which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem?
a. Lack of water during a drought causes many of the individuals in a population to die.
b. Seasonal temperature changes cause a species to migrate between two ecosystems.
c. The population of a predator increases following an increase in the population of its prey.
d. Two organisms in a mutualistic relationship compete for resources until one relocates.

Question

Which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem?  
 a. Lack of water during a drought causes many of the individuals in a population to die.
 b. Seasonal temperature changes cause a species to migrate between two ecosystems.
 c. The population of a predator increases following an increase in the population of its prey.
d. Two organisms in a mutualistic relationship compete for resources until one relocates.

anonymous · Answer

Only C and D have any biotic factor, but there is a change in population dynamics only in C.

anonymous · Answer

so its c?

anonymous · Answer

here A and B as abhi said are not biotic and option c is also not true as if the num. of preadators increase no. of prey decrease so it ,must be D