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1. two environmental friendly habits are walking and _______ to school.

2. all terrestrial forms of life need ______ which is their basic necessity.
3. what is artificial selection?
4. what is trilobite ?



1.trees and plants 2.sorry but log into this website for 2 and 3 answer go to  wikepedia and search your answer
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1... trees and plants is the answer fr 1 st one.
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