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The last "hot house" or period of increased temperature occurred _____.
Because the sun's heat radiates onto a human's skin, which in turn obsorbs the radiating heat...
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User: The last "hot house" or period of increased temperature occurred _____.

Weegy: Because the sun's heat radiates onto a human's skin, which in turn obsorbs the radiating heat...
Expert answered|laura27|Points 11|

User: The early atmosphere on Earth was _____.

Weegy: * Composition - Probably H2, [ [ He * These gases are relatively rare on Earth compared to other places in the universe and were probably lost to space early in Earth's history because o Earth's gravity is not strong enough to hold lighter gases o Earth still did not have a differentiated core (solid inner/liquid outer core) which creates Earth's magnetic field (magnetosphere = Van Allen Belt) which deflects solar winds. * Once the core differentiated the heavier gases could be retained ] ]
Expert answered|laura27|Points 11|

User: Volcanoes created the initial oxygen in the atmosphere.

Weegy: Volcanoes are formed by the accumulation of magma (molten rock that forms below a planet's surface). Magma can erupt through volcanic vents. As magma forms, it rises and accumulates in underground reservoirs before it erupts onto the surface. [ [ With each eruption, the erupted material adds another layer to the growing volcano. ] ]
Expert answered|laura27|Points 11|

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Asked 5/13/2010 7:48:45 AM
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