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

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

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Environmental Science
Low clouds retard surface cooling at night better than clear skies because:

The water droplets in the clouds reflect infrared energy back to earth
The clouds absorb and radiate infrared energy back to earth
The formation of the clouds releases latent heat energy
The clouds start convection currents between them
The clouds are better conductors of heat than is the clear night air

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