Which is the best example of tropism in plants a: a stem bending toward sunlight
b: an apple developing from an ovary
c: water moving through vascular tissue
d: carbon dioxide being released from a stem

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In stage 2 farmers used the land primarily to grow food for their families and their small communities.

The african continent is home of the worlds largest desert and longest river . t or f

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.