About ________ people migrated from Europe to the United States between 1821 and 1920

A) 55 million
B) 33 million
C) 18 million
D) 21 million
E) 15 million


Answer: B

Environmental & Atmospheric Sciences

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Over oceans, rates of evaporation exceed those of precipitation. In spite of this, sea level does not drop. Explain why this is the case

What will be an ideal response?

Environmental & Atmospheric Sciences

The two ways in which humans have most interfered with the carbon cycle are

A. clearing trees and plants and aerobic respiration. B. aerobic respiration and burning of fossil fuels. C. respiration and photosynthesis. D. burning of fossil fuels and clearing trees and plants. E. respiration and clearing trees and plants.

Environmental & Atmospheric Sciences

When a large amount of dense water sinks at polar ocean basins, the same quantity rises elsewhere in

the world ocean. Indicate whether the statement is true or false.

Environmental & Atmospheric Sciences

What changes the compensation depth?

A) Salinity B) Temperature C) Density D) None of these choices

Environmental & Atmospheric Sciences