premise: if something is required to create something else then that something is needed to make that something else sent2: fewer means a decreased amount sent3: creating paper requires cutting down trees sent4: recycling reduces the resources needed to make something sent5: cutting down trees has a negative impact on an ecosystem / organisms living in an ecosystem sent6: decreasing something negative has a positive impact on a thing sent7: trees are a kind of resource sent8: fewer means a reduced amount sent9: an impact is a kind of effect.
hypothesis: the eye color of a child is an inheried characteristic