The most common gas in the earth's atmosphere is:

A. nitrogen

B. oxygen

C. hydrogen

Which of the following best contrast the role that geography played in the development of civilizations Mesopotamia and the Mesoameria?

Explain why each mineral has its own properties different from every other mineral

During which months is it summer in the southern hemisphere?

Where is our solar system located within the milky way galaxy? At the far edge of the galaxy's visible disk. In the halo of the galaxy. Roughly halfway between the center and the edge of the visible disk of the galaxy.

Which geographical land form describes Mexico and Central America? A. Cordillera B. Isthmus C. Peninsula D. Headland

1 The human genome project identified the sequence of base pairs in human DNA and identified several g would least likely lead to a scientific investigation based on these findings? Are certain humans more likely to develop genetic diseases?

Mars has no weather. True False

Which of the following bodies of water is not located along Canada's coasts? a. Beaufort Sea b. the Gulf of Mexico c. the Arctic Ocean d. Hudson Bay

What causes the wind? A) The earth's orbit around the sun B) The earth's rotation on its axis. C) The layers of the earth's atmosphere. D) Uneven heating of the earth's surface by the sun.

What country does Aruba belong to?