Difference between revisions of "Pollution"

Revision as of 14:27, 20 September 2018

Key Stage 3

Meaning

Pollution is the harmful chemicals that go into the environment usually made by humans.

Pollution in a Food Chain

When farmers grow crops, wild animals sometimes eat them, so the farmers spray the crops with poison.

When the animals die from the poison, they are eaten by other animals which then also eat the poison.

The poison builds up in the food chain, meaning the top carnivore often has a lot more poison than was originally sprayed on the crops. This can be very harmful to them and even kill them.


In this diagram the poison is shown by yellow X's. If each gazelle eats two bushes, then the gazelles will get twice as much poison as the bush. If a cheetah eats two gazelles, then the cheetah will get twice as much poison as the gazelle had.

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+==Key Stage 3==
+===Meaning===
 '''Pollution''' is the harmful [[Chemical|chemicals]] that go into the [[Environment|environment]] usually made by [[Human|humans]].
+===Pollution in a Food Chain===
+: When farmers grow crops, wild animals sometimes eat them, so the farmers spray the crops with poison.
+: When the animals die from the poison, they are eaten by other animals which then also eat the poison.
+: The poison builds up in the food chain, meaning the [[Top Carnivore|top carnivore]] often has a lot more poison than was originally sprayed on the crops. This can be very harmful to them and even kill them.
+{| class="wikitable"
+|-
+|[[File:PoisonFoodChain.png|center|500px]]
+|-
+| style="height:20px; width:500px; text-align:center;" |In this [[diagram]] the poison is shown by yellow X's. If each gazelle eats two bushes, then the gazelles will get twice as much poison as the bush. If a cheetah eats two gazelles, then the cheetah will get twice as much poison as the gazelle had.
+|}