what knowledge do we receive about goods found in the Tropical Rain-forest from the indigenous tribe?

What raw materials are found in the Rain-Forest?

What medicines are found in the Rain-Forest?

What foods are found in the Rain-Forest?

How life support systems influences the Hydro-logical cycle (water cycle)?

Points related to the Rain-Forest being the Green-Lung.

how does the Rain-Forest connect to the nutrient cycle?

What are the global factors that effect world Biomes?

What are the local factors that effect the world Biomes?