Eart's rain and snow come from the Marine ecosystem, which is the largest of the aquatic ecosystems on Earth!
(1) convection occurs in substances that flow.it can be initiated by uneven heating. (2) in the mantle convection of hot rock creates plumes which move tectonic plates. in the outer core convection causes magnetism. (1) is your first question and (2) is your second. hope this helps! :)
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Washington, constituent state of the United States of America. Lying at the northwestern corner of the 48 conterminous states, it is bounded by the Canadian province of British Columbia to the north, the U.S. states of Idaho to the east and Oregon to the south, and the Pacific Ocean to the west.The state, which is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north, was admitted to the Union as the 42nd state in 1889. Olympia is the state capital; the state's largest city is Seattle.
people burning down forests and grow crops in the ashes. Cutting the hillsides into stair-step shapes in order to have flat places to plant seeds. They modify the environment so they have ways to grow food and crops. A negative impact of modification is it could cause a smog or rivers and streams.