In an ecosystem the ultimate source of all energy is

Petroleum byproducts are derived from a renewable source? True or False?!

Put these layers of the earth in order, starting at the outermost layer and going inward.

True or false, is the lighting and thunder are related to each other?

What caused the new zeland earthquake 2016

How are the choices of Saudi women limited by the country's customs? Women may not take part in the hejira. Women must only be wives and mothers. Women must spend all of their free time visiting relatives.

Why do the North and South pole experience seasons differently than the rest of the planet? Why do they have periods of continuous daylight or continuous darkness?

According to the International Astronomical Union, which of the following is one of the criteria for an object to classified as a Planet? Select all that apply.

What physical features are the five largest cities in the u. S. Near?

Because of his failed economic plan, Mao Zedong later opened China up to foreign trade. True False

Your friend tells you that our orbit is so special that it is at just the right distance from the sun for us to be at the right temperature for life to flourish. He says that if we were even ten miles closer to the sun, we would burn up.