Which of these gives an example of the influence of location on what kinds of organisms can survive in a biome?
A) A pine tree grows well in a taiga evergreen forest in Canada, while a barrel cactus grows well in a desert in Arizona.
B) A caribou that lives in a taiga ecosystem occasionally wanders north into the tundra.
C) About 300 species of birds live in the taiga in the summer.
D) A person removes a cactus from a desert in Nevada and plants it in his yard in a nearby desert area.