What are the three essential chemical elements in the biosphere?
nitrogen, oxygen, and carbon
carbon, oxygen, and helium
oxygen, carbon, and iron
nitrogen, carbon, and hydrogen

If the president needed to send two members of the cabinet to italy to negotiate a military treaty, the secretary of defense and the secretary of would most likely be sent.

How did kenya gain its idpendence in 1963

About 300 billion dollars in taxes is lost in the united states alone due to an underground economy, which involves paying individuals cash rather than having them on the official payroll. a. true b. false