Based on the albedo values given, identify the object that will reflect more than half of the solar radiation it receives.
0.13
0.21
0.55
0.06

the answer you are looking for is the united states forest service.

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these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.