Environmental Science
The density of water vapour in a given parcel of air is expressed by the:

Mixing ratio
Absolute humidity
Relative humidity
Saturation vapor pressure
Specific humidity

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

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