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Question: A population of rabbits in a forest is being
studied. The researchers notice that the population size has
increased significantly over the past year. What could be a
plausible explanation for this increase?
 A. Decreased availability of food sources
 B. Introduction of a new predator in the forest
 C. Decrease in the prevalence of disease among the
rabbits
 D. Loss of habitat due to deforestation
 Answer: C. Decrease in the prevalence of disease among
the rabbits
 Rationale: A decrease in disease prevalence would lead
to higher survival rates, resulting in an increase in
population size.
Question: Which of the following is an example of an
autotroph?
 A. Lion
 B. Mushroom
 C. Oak tree
 D. Human
 Answer: C. Oak tree
 Rationale: An autotroph is an organism that can produce
its own food using light or chemical energy. Oak trees are
an example of autotrophs as they undergo photosynthesis to
produce their own food.
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