What do geologists use to mark divisions in geologic time

Which features do political maps show

Briefly describe a mixed economy

What led to the Quebec act, and what were the effects of its passage

Electric power is less expensive at night because: w) more hydroelectric generation is brought on line at night. x) there is less demand at night. y) pollution control is less stringent at night. z) power plants are more efficient at night.

Astronomers claim to have a reasonable model for interior structure of Jupiter. What is the observational basis for this model? Does it make any predictions that have been put to observational tests?

Why did Galileo's observations of moons orbiting Jupiter disagree with the theory of the universe accepted up to that time in history?

Which of the following is an example of an artifact? a. bones b. fossils c. rock layers d. pottery

Which ocean borders the United States on the east and contains resources such as natural gas and petroleum? A. the Atlantic Ocean B. the Pacific Ocean C. the Arctic Ocean D. the Indian Ocean

What causes the long days and nights above the artic circle A: The tilt of Mars' axis accounts for the long days and nights. B; The tilt of the sun's axis accounts for the long days and nights.

Witch South America country is the farthest place on the earths surface from the earths center located Brazil Ecuador Peru Chile