18. The hydrologic cycle is driven primarily by? (A)solar energy and gravity (B)solar energy and the moon (C)solar and mechanical energy (D)mechanical and chemical energy

5. The enhanced greenhouse effect is due to (A)increased trapping of infrared radiation emitted from the Earth's surface and oceans. (B)decreased trapping of infrared radiation emitted from the Earth's surface and oceans. (C)increased trapping of visible and ultraviolet radiation emitted from the Earth's surface and oceans. (D)decreased trapping of visible and ultraviolet radiation emitted from the Earth's surface and oceans.

18. The hydrologic cycle is driven primarily by?
(A)solar energy and gravity
(B)solar energy and the moon
(C)solar and mechanical energy
(D)mechanical and chemical energy

相關試題

相關試卷