Environmental Science
The most important human activity, leading to the extinction of wildlife, is

Introduction of alien species
Pollution of wildlife, is
Hunting for valuable wildlife products
Alternation and destruction of the natural habitats

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Environmental Science
The primary cause of a radiation inversion is:

Solar radiation reflected by the earth's surface
Infrared radiation absorbed by the earth's surface
Infrared radiation absorbed by the atmosphere and clouds
Infrared radiation emitted by the earth's surface
Solar radiation absorbed by the earth's surface

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