Answer:
The use of the Pacific Ocean for trade and commerce is one big reason to consider Hong Kong and San Francisco as part of the same region. In addition, many current and former residents of Hong Kong feel a special kinship with San Francisco's Chinatown.

Temperatures raise as the altitude increases. It also absorbs all the suns rays and energy making it warmer. <span />
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Tropical : near the equator
Temperate : large seasonal weather variations
Polar : receives the least sunlight
Answer:
gravity
Explanation:
streams erode dirt and rocks, transport the sediment, and redeposit it in new locations shaping the earths surface into a system of stream valleys. streams now flow downhill due to the force of gravity