Which challenges, brought about by climate, do farmers in georgia face? check all that apply
air pollution
droughts
insects
plant diseases
weeds

Ahill is made of rock particles of different sizes. which of these agents of erosion probably caused the hill to form?

In a economy individuals answer the three basic and the central authority or leaders have little say in the economy.

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.