& are responsible for the changes of the earth’s surface.

Which of the following best describes brazil's economy from 1650-1880? a. it gradually shifted to manufacturing as the industrial revolution progressed. b. it was based on mining. c. it was based on plantation agriculture, where slaves served as a labor force. d. it was based on small, family-owned farms.

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer

Following lenins death, who took control of the soviet union