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==Key Stage 3==
===Meaning===
An [[insecticide]] is a [[chemical]] used to kill [[insect]]s.
===About Insecticides===
:[[Insecticide]]s are usually sprayed on crops to prevent [[insect]]s from damaging them.
==Key Stage 4==
===Meaning===
An [[insecticide]] is a [[chemical]] used to kill [[insect]]s.