UN: Extinction of bees could put food supply at risk

Thousands of species of insects could soon go extinct, and that could put the world's food supply in jeopardy.

A United Nations report says that bees, butterflies and even birds are at risk.

Three quarters of the world's food crops depend on pollination by insects or animals.

The UN says sustainable agricultural practices, diversified crops, and eco-friendly food production could help endangered species recover.

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