Environmental Science
Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth's atmosphere?

Oxygen and nitrogen
Nitrogen and carbon dioxide
Water vapor and carbon dioxide
Ozone and oxygen

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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

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

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