Question

Which human-induced event would cause a decrease in the population of another species?
a. Salmon are eaten by the bears who are hunted.
b. The polar bear population is affected by seal hunters.
c. Fungi decompose a diseased rosebush.
d. Vultures feed off the bodies of birds killed by an oil spill.

Answer 1

B. because polar bears eat seals, and if the seals are hunted then there is less for them to eat and their species ends up decreasing.