1) What is the 3rd layer of a tree  a) canopy b) understory c) emergent d) forest floor 2) What percentage of medicines are developed from the tropic rainforest a) 81% b) 41% c) 75% d) 21% 3) how much do the tree's grow in effort to get sunlight ? a) 51m b) 21m c) 40m d) 19m 4) How are the tropical rainforest characterised as? a) High rain fall and high green trees b) Pine trees c) low rain fall and low oak trees d) high rainfall and low birth trees

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