A Botanist Has Found That the Giant Saguaro,Carnegiea Gigantea,lives in the Sonoran

Multiple Choice

A botanist has found that the giant saguaro,Carnegiea gigantea,lives in the Sonoran Desert below the freeze line and in some very dry regions (such as Yuma) to the eastern edge of Arizona.She has described the ________ of saguaro.

A) resource spectrum
B) vital resource
C) resource band
D) habitat