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Photo butterfly. Description: Butterfly - are insects that live all over the place. butterflies diet consists of nectar and pollen. Her life begins with the eggs gradually turning into a caterpillar, the third stage is the pupa, and finally a butterfly pupa education. Butterflies during the conversion of the first three stages are very harmful to the fields of agriculture, but when they are adult butterflies are good, they pollinate the plants. And the benefits of the silkworm can not say - is a producer of natural silk.