Is:1. air waste Caused by burning waste fumes and outdoor air pollutants2. waste water Caused by a pile of waste residue on the floor when it rains will occur in which waste water flowing into the River, water pollution.3. the source vectors from the waste residue on the ground breeding of rats and flies, which carry infectious diseases do, affect the health of the people.4. why bother and waste from the collection, not all cause disturbing odor.
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