2분

Pollination Valley Forge Nature & Science

    • 자연 과학

Valley Forge NH Park: The different ways pollination occurs and the difference in plant and tree pollination is discussed. Butterflies and milkweeds are emphasized.

  • ℗ & © The National Park Service

Valley Forge NH Park: The different ways pollination occurs and the difference in plant and tree pollination is discussed. Butterflies and milkweeds are emphasized.

2분

  • ℗ & © The National Park Service

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