What are two sources of carbon dioxide in the air?

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

In upholding louisiana's separate car act, the supreme court claimed thatsegregation was not the same as discriminationthe fourteenth amendment did not apply to southern statesdiscrimination was necessary in order to maintain public ordero segregation was unconstitutional based on the fourteenth amendment

The largest employer of cartographers is the