Tropical Rainforests

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Tropical Rainforests 作者: Mind Map: Tropical Rainforests

1. Are they important?

1.1. Lungs of the Earth

1.2. Provide most of the oxygen

2. Deforestation

2.1. Cattle ranching

2.2. Agriculture

2.2.1. Need for land

2.3. Mining

2.3.1. Need for minerals, and precious metals

3. Why are they called tropical rainforests?

3.1. Wet and humid weather

3.2. Dense tree canopy

3.3. Heavy rain

3.4. Little light passes through the layers

4. What are tropical rainforests?

4.1. Rainforests that occur in areas of tropical rainforest climate which are wet and humid.

4.2. Three layers: Overgrowth, Canopy, Undergrowth

5. Where are they found?

5.1. Latin America

5.2. Brazil

5.3. Southeast Asia and the Pacific Islands

5.4. West Africa