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Different substances need transport - Online practice 1
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
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Transport record: oxygen enters blood at the lungs. Simplified model: lungs exchange gases with blood; the gut absorbs water and digested nutrients; blood transports substances to or from tissues. Red blood cells carry oxygen, and liquid plasma transports dissolved substances. The heart pumps blood, not pieces of undigested food. Do not provide personal health or diet details.
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