Advantages of plantation farming

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.

Largest layer of atmosphere international space station orbits ultraviolet radiation causes ionization the phrases describe what layer of earth's atmosphere?

Select all that apply the earth orbits the sun because a. the earth is in motion therefore stays in motion b. the suns gravity pulls the earth in a curved path c. a contact force is pushing the earth