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The tropical rainforest is a biome with a constant temperature and a high rainfall. The level of humidity and density of the vegetation give the ecosystem a unique water and nutrient cycle. Rainforests around the world are threatened by human expansion.
Geothermal heat- to provide energy for process like subduction, melting and metamorphism (to drive plate tectonics)
solar energy- for processes like erosion, weathering and transport
There are five basic kinds of mountains:
Fold Mountains (Folded Mountains)
Fault-block Mountains (Block Mountains)
Dome Mountains.
Volcanic Mountains.
Plateau Mountains.
