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.