Environmental Science
Pollutants that are introduced into the environment by human activity are called as

anthropogenic pollutants
qualitative pollutants
all of these
quantitative pollutants

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Environmental Science
The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?

Low albedo of clouds, high albedo of water
Low albedo of clouds, low albedo of water
High albedo of clouds, low albedo of water
High albedo of clouds, high albedo of water

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