Environmental Science
The biosphere encompasses the total __________ of living material in a region or the globe.

Weight
Animal population
Photosynthesis
Diversity of species

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Environmental Science
The earth is tilted at an angle of 23.5o with respect to the plane of its orbit around the sun. If the amount of tilt were increased to 40o, we would expect in middle latitudes:

No appreciable change from present conditions
Hotter summers and milder winters than at present
Cooler summers and colder winters than at present
Hotter summers and colder winters than at present
Cooler summers and milder winters than at present

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Environmental Science
A red shirt

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

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