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

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Environmental Science
What is the cause of the Exxon Valdez?

Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected.
none of these.
a plane which crashed and caused death of human life
a ship which wrecked on the coast of India

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