Environmental Science
The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?

High albedo of clouds, high albedo of water
Low albedo of clouds, low albedo of water
Low albedo of clouds, high albedo of water
High albedo of clouds, low albedo of water

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Environmental Science
Which of the following statements regarding species interdependence are true? A. An association of two species where one is benefitted and other remains unaffected called mutualism B. An interspecific association where both partners derive benefit from each other is called commensalism C. A direct food relation between two species of animals in which one animals kills and feed on another is referred as predation D. A relationship between two species of organism where both the partners are benefitted from each other is called symbiosis

A and C only
C and D only
B and C only
A and B only
B and D only

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Environmental Science
Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than latitudes further south?

Increased cloud cover reflects solar energy in the northern latitudes
Solar energy is spread over a larger area in northern latitudes
Some of the sun's energy is reflected by snow and ice in the northern latitudes
All of these
Solar energy is used to melt frozen soil in the northern latitudes

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