What is density

a weight per unit volume

b mass per unit area

c weight per unit mass

d mass per unit volume

Which of the following is the current best scientific explanation for the movement of the tectonic plates?

Which are statements that are true about ecosystems

Which two geologic features generally form after a glacier creates a moraine? a. a till or horn b. a lake or drumlins c. a cirque or erratics d. an esker or hanging valleys

How are the land forms of Pakistan and Bangladesh similar

Which one of the following statements relate to climate as opposed to weather? Select one: a) Last winter was the coldest I can remember b) The first two months of 2013 were very wet c) We've now had five days in a row above 40C d) June is the

Why is the earth considered a dynamic planet? What are its three concentric layers and there properties?

All of the weather on Earth occurs in the thermosphere. True False

Which are causes of mechanical weathering? Select three options.

How has immigrants from European colonies affected European culture?

Why are the climates of Central America's two coasts different? a) because it is near the equator b) because of the central mountains c) because of the high elevation d) because of the rain forests