Human Influences on the Environment

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• 2. ___ _________ is a compound which destroys or controls any organism which is considered to be harmful to our interests (1, 9)
• 3. ___ ____________ destroys or controls populations of insects, preferably only those thought to be (2, 11)
• 4. There are two types of fertilisers; organic and inorganic. An example of an organic fertiliser is (8, 6)