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Which group of people colonized Alaska,and controlled it until the United States purchased it in 1867?
Solar Radiation
Electromagnetic energy emitted by the sun, including visible light, ultraviolet light, and infrared radiation, which provides the primary source of energy for Earth's climate system.
Tropical Rain Forest
A hot, moist biome found near the Earth's equator, characterized by high annual rainfall and a diversity of plant and animal species.
Emergent Layer
The topmost layer of a rainforest, where the tallest trees extend above the forest's general canopy, receiving most sunlight.
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