Which of the following energy sources harnesses the power of waves?

a. hydroelectric

b. hydrokinetic

c. wind

d. geotherma

Which of the following is a type of event that could cause immediate changes in Earth's global climate? Select the correct answer below. A. asteroid impact B. continental drift C. fossil formation D. mass extinction

Global warming is caused by an increase in the level of carbon dioxide gas in the atmosphere. How has this affected the world's oceans?

How could you leave home on Monday to go sailing, sail for an hour on Sunday, and return home on Monday

What do most scientists think prevented the rocks in the asteroid belt from forming into a planet

From the map below how would you describe the income level of Central America? A. Mainly high income B. Mainly upper - middle income C. Mainly lower - middle income D. Mainly low income

Most common form of government found in Africa today

When were the chocolate hills discovered?

maria receives a cake order for charity event from a company. She uses 375g of flour, 250g of cocoa powder and 300g chocolate for a one kilogram cake. If the company orders a 7kg cake, what is the ratio of each of the ingredients that she needs?

How many states are north of the equator

Explain how the types of mountain landforms are related to one another.