Pieces of rock and sand settle to the bottom or sides of a river because:

they are heavier than water

they are lighter than water

gravity is stronger in a river than on land

wind blows the pieces to the bottom

The 3 types of rocks

Engineers and physicists dream of solving the world's energy supply problem by constructing power plants that would convert hydrogen to helium. Our Sun seems to have solved this problem.

Angle ACD is supplementary to angles ACE and BCD and congruent to angle BCE. Which statements are true about the angles in the diagram? Check all that apply.

What is the difference between maternal mortality and infant mortality (6)

What is fertile farm land?

There is a large area made of schist. What is the most likely environment that existed before the area was metamorphosed? Choose one of the following and discuss as to why you chose it? (A) desert dunes (B) coral reef (C) ocean floor (D) volcano

What would be a probable explanation for why there are many endemic plants and birds in new Zealand but no native animals? A. they were driven away by non native mammals B. Plants and birds would make ocean crossings to.

Which of the following factors was key to the formation of the first civilization in the Nile Valley? A. Nomads acquired more livestock to increase their wealth. B. The region experienced a surplus of food. C.

Most U. S. beaches are shrinking or encroaching on the land rather than growing or moving seaward, so the land of the U. S. is getting smaller, not bigger.

On what continent would you find the place with a latitude of 20° n and a longitude of 0°