Grassland ecosystems receive very little precipitation. The predominant plants are grasses, and drought and wildfire are common. Temperatures in grasslands are warm in the summer and cold in the winter. Which of the following describes a biotic component of a grassland ecosystem?
A.
Grasses are common.
B.
Temperatures are warm in the summer.
C.
There is little precipitation.
D.
Wildfires are common.
O_o