If the marine biome takes up 75% of the Earth's surface and the freshwater biome takes up 1.8% of the Earth's surface; what percentage of the Earth's surface is terrestrial biomes? A. 76.8%
B. 93%
C. 7%
D. 23.2%

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

Which soil layers comprise the topsoil? o horizon a horizon b horizon c horizon