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

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .