Changes

: In science '''evidence''' must be [[reproducible]]. So if one person makes an [[Observe|observation]] or [[Measure|measurement]], every other scientist in the world should be able to make the same [[Observe|observation]]. If they cannot; then scientists don't accept it as good evidence.

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| style="height:50px; width:200px; text-align:center;" | They have fur, they give birth to live babies, they feed their babies with milk.

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==Key Stage 3==