Ecosystems: living connections

你需要知道的

• An ecosystem is a community of living things interacting with each other and with their surroundings.
• Energy flows from producers through the consumers that eat them.
• Nutrients cycle through the system, which helps explain why some places support so much life.
• Damage one part, as deforestation does, and effects spread through the rest of the web.

这个短片讲了

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