Difference between revisions of "Evolution by Natural Selection"
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|[[File:GiraffeEvolution.png|center|400px]] | |[[File:GiraffeEvolution.png|center|400px]] | ||
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| − | | style="height:20px; width:200px; text-align:center;" |The giraffe used to have a short neck. Over many generations the population of | + | | style="height:20px; width:200px; text-align:center;" |The [[giraffe]] used to have a short neck. Over many generations the population of [[giraffe]]s had longer and longer necks. |
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{| class="wikitable" | {| class="wikitable" | ||
| − | |+Millions of years ago the arctic fox and the desert fox were the same species. | + | |+Millions of years ago the [[Arctic Fox|arctic fox]] and the [[Desert Fox|desert fox]] were the same [[species]]. |
| − | | style="height:20px; width:200px; text-align:center;" |Arctic Fox | + | | style="height:20px; width:200px; text-align:center;" |[[Arctic Fox]] |
| − | | style="height:20px; width:200px; text-align:center;" |Desert Fox | + | | style="height:20px; width:200px; text-align:center;" |[[Desert Fox]] |
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|[[File:ArcticFox.png|center|200px]] | |[[File:ArcticFox.png|center|200px]] | ||
Revision as of 11:07, 29 August 2018
Key Stage 2
Meaning
Evolution means a change over time. All species on earth evolve.
About Evolution
- The different types of creatures we see today looked different millions of years ago. The creatures have evolved.
- A single animal or plant does not evolve. A whole population evolves over many generations.
- Evolution can be shown by looking at fossils of creatures that lived millions of years ago.
Examples
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| The giraffe used to have a short neck. Over many generations the population of giraffes had longer and longer necks. |
| Arctic Fox | Desert Fox |
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| The Arctic Fox has evolved to have thick white fur and small ears. | The Desert Fox has evolved to have thin sandy coloured fur and very large ears. |