Which of the following are the two primary gasses found in the earth's atmosphere
nitrogen and oxygen
nitrogen and carbon
hydrogen and carbon
carbon and helium

What event started the space race and made americans feel their security was threatened a.) alan shepard's suborbital flight. b.) the launch of sputnik c.) the launch of explorer d.) the cuban missle crisis

Based on this article, what can you infer about the role of religion in the civil war in sudan? respond in three to five sentences. use details from the article to support your statement.

Which of the following did the maya, aztec, and inca all have in common