Which of the following is responsible for about half of the heat generated by Earth's core?

A. Frictional heating

B. Residual heat from Earth's formation

C. Radioactive decay of elements

D. Sunlight

Approximately what percentage of the projects funded through the World Bank have failed? a 25% b 75% c 99% d 50%

What is the imaginary line the earth rotates around?

Upwelling occurs along the northern california coast because

How can carbon move from one living thing to another living thing?

Norfolk, located in coastal Virginia, has been targeted as especially vulnerable to sea level rise. What other factor increases the city's vulnerability?

Magma that reaches earth surface and flows from volcanoes

The gray wolf is a predator that keeps the herd numbers of elk and deer populations in check. With the disappearance of wolves, elk and deer populations exploded, which led to overgrazing of plants, especially in riparian zones.

What physical characteristics make the Midwest particularly good for farming?

The Amazon river rises in which country?

How are the population patterns of canada and the united states similar