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DDT
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==Key Stage 3==
===Meaning===
[[DDT ]] was a [[pesticide]] (poison) used on crops to kill aphids (which would damage the crops).
===About DDT===
: The [[DDT]] was sprayed on crops to kill aphids.
: Ladybirds would then eat the aphids and take in the same [[pesticide]].
: Birds [[Bird]]s would eat the ladybirds and the [[pesticide]] would build up in their systems.: "Birds of prey " then ate the birds other [[bird]]s getting even more [[pesticide]] inside them.: It turned out this [[pesticide]] made the shells of the "bird of prey's " eggs very weak. This meant most of the eggs cracked and the baby birds died before hatching. The [[population ]] of many "birds of prey " dropped very quickly.
: [[DDT]] was banned when they discovered its harmful effects on birds of prey.
==Key Stage 4==
===Meaning===
[[DDT]] was a [[pesticide]] (poison) used on crops to kill aphids (which would damage the crops).
==Beyond the Curriculum==
{{#ev:youtube|https://www.youtube.com/watch?v=GLllZ-qiXJA}}