When did the earliest humans appear on Earth?

An oceanographer is traveling from the west toward the east on the atlantic ocean. she collects rock samples from the seafloor every 5 kilometers.

If you described Washington DC as being south of New York City you would be describing its

If you were a mayor of a small town, what conditions would you consider when trying to choose between solar, wind, or hydrokinetic power as your main source of power for the town.

As classically defined, Sustainability has two "legs" by which it is defined. These are: Group of answer choices: O environmental quality and social equity O carbon footprint and recycling O biodiversity and conservation O false, the triple bottom

The river that many other rivers connect to in North America

Which European nation was the most influential in colonizing Brazil? A. Spain B. France Portugal D. England

What crops grow abundantly in the Central Valley of Chile? A) fruit, vegetables, and wine grapes B) sugar cane, rice, and oranges C) cacao, coffee, and bananas D) corn, wheat, and barley

Sections of active fault lines that haven't experienced a significant earthquake for a long time, even though adjacent sections have, are called a. stress accumulations. b. recurrence gaps. c. seismic risks. d. seismic gaps

What is the Trans-Siberian Railroad? a. the world's longest continuous railroad line b. the major link between Moscow and Europe c. the best way to travel between Russia and Afghanistan d. the shortest railroad in Siberia

What are the 4 different fields of study of Earth's systems?