Environmental Science
The species of plants that play a vital role in controlling the relative abundance of other species in a community are called

Edge species
Pioneer species
Link species
Keystone species
Successional species

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Environmental Science
A red shirt

Selectively absorbs red wavelenghts of visible light and scatters the rest
Selectively scatters red wavelenghts of visible light and absorbs the rest

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Environmental Science
The earth's radiative equilibrium temperature is:

The average temperature the earth must maintain to prevent the oceans from freezing solid
The temperature at which the earth is radiating energy at maximum intensity
The temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates
The temperature at which rates of evaporation and condensation on the earth are in balance

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