What two elements make up most of the earth's atmosphere?

The secret of silk-making was known only in China until about 550 BCE.

A seawall is protecting the chalk coast from what?

Name the three islands in the caribbean sea

What mountain range borders the plateau of tibet other than the himalayas?

In what continent is sweden located?

Earth is a closed system. that means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on earth ___. so it is essential that bio geochemical cycles __ these materials as they move through earths subsystems A: remains constant.

What are the percentages of the large near Earth asteroids that we have found so far?

Name the lines of latitude that are labeled north of the equator what would be the next label after 75 degrees north

Why did the ancient Chinese believe that they were the center of the universe? O The arrival of traders from other lands made them an important civilization. O The people of ancient China lacked a basic education in world geography.

Distance that the transcontinental railroad covered from Omaha to San Francisco.