Summaryhttps://peda.net/id/8c9e2d32f8c2021-08-09T08:06:19+03:00https://peda.net/:static/548/peda.net.logo.bg.svg<div class="license">Tämän sivun lisenssi <a rel="license noopener" href="https://peda.net/info" target="_blank">Peda.net-yleislisenssi</a></div>
Goalshttps://peda.net/id/8c9ec7d9f8c2020-04-17T10:31:50+03:00<ul>
<li>Understanding what evolution is.</li>
<li>Being able to describe the most important events in the history of life.</li>
</ul>2021-08-09T08:06:19+03:00Summaryhttps://peda.net/id/8c9f7158f8c2020-06-29T12:19:24+03:00<div class="eoppi-summary">
<ul>
<li>Evolution means the gradual development of species as a result of mutations and natural selection.</li>
<li>The history of life can be studied by examining fossils.</li>
<li>The history of life can be divided into four eras.</li>
<li><b>The beginning of life</b>:
<ul>
<li>The planet Earth was formed 4,6 billion years ago.</li>
<li>Multicellular organisms and sexual reproduction emerged during the end of the Precambrian era.</li>
</ul>
</li>
<li><b>The Paleozoic era</b>:
<ul>
<li>The first plants and animals moved to land.</li>
<li>Vertebrates developed.</li>
</ul>
</li>
<li><b>The Mesozoic era</b>:
<ul>
<li>The era of reptiles (such as dinosaurs).</li>
<li>Gymnosperm and angiosperm plants, birds, and mammals developed.</li>
</ul>
</li>
<li><b>The Cenozoic era</b>:
<ul>
<li>Birds and mammals diversified and became more common.</li>
<li>Humans developed towards the end of the Cenozoic era.</li>
</ul>
</li>
</ul>
</div>
2021-08-09T08:06:19+03:00