Which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem? (4 points)
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
Excessive rain and flooding cause organisms in an area to relocate.
d
The population of a predator increases following an increase in the population of its prey.
Answers: 2
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