Some species of hummingbirds have different shapes of beaks that evolved to allow them to drink from certain flowers. The flower species have evolved to produce nectar that is tasty for the hummingbirds. This example is a type of .

the answer you are looking for is the united states forest service.

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bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )