4Which can be used as an indicator of past climate?
A. fossils
C. mountain ranges
B. lava flows
D. tides

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.

How does central place theory explain patterns in the size and distribution of cities?

What is unusual about the iraq mountains ,in spite of their old age?