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Sea urchins kelp - PowerPoint PPT Presentation

Food chain in Sea

Food chain in Sea. Human often make changes in food chains. Then they find that one change causes other changes. That was what happened when hunters killed nearly all the Pacific sea otters. 1- What is the main idea of this text?. 2- How can human make changes in the food chain? .

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All things on Earth can be classified into one of two categories

birds. wind. insects. substrate. bacteria. precipitation. fungi. sunlight. reptiles. temperature. plants. disturbances (fire, hurricanes). mammals. amphibians. nutrients. fish. All things on Earth can be classified into one of two categories. BIOTIC. ABIOTIC.

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316 views • 24 slides

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Sea urchins kelp - PowerPoint PPT Presentation

Food chain in Sea

All things on Earth can be classified into one of two categories