Download presentation
Presentation is loading. Please wait.
Published byDylan James Modified over 9 years ago
1
By Hayden & Elijah the awesome
2
How do species evolve All species are related to each other. If you trace your family tree back through your parents, grandparents etc. it will quite quickly join up with your cousin’s family tree. If you keep going back far enough, eventually your tree will join up with that of a chimpanzee! Keep going and it will join up with your pet hamsters, further still with your pet cats. Keep going and eventually it will join up with your pet goldfish and if you really keep going for a long time you can trace it back so it joins up with an apple tree’s family tree, and eventually bacteria will join up too!
3
Who was Charles Darwin? Charles Darwin This Guy Darwin is sometimes known as the father of modern biology. He was a naturalist who travelled the world studying & collecting samples of many creatures. He is most famous for his theory of natural selection, which explains how animals & plants have evolved or developed over time. Key Facts Born: February 12 th 1809 Died: April 19 th 1882 Mother: died when he was only 8 years old, was daughter of a famous potter- Josiah Wedgewood.
4
Evolution Evolution is the slow process that changes animals and plants and it’s a great piece of science! It describes loads of things in nature like fossils, peacocks' tails, lions’ teeth, birds’ wings and human brains, just to name a few. It is also supported by lots and lots of evidence that has been collected by scientists for more than 150 years! Some people think it’s not true. They prefer religious explanations of why nature is like it is. All species are related to each other. If you trace your family tree back through your parents, grandparents etc. it will will
5
Galapagos islands Animals that he found Finches! Komodo dragons! Turtles!
6
Over an extended period of time via adaptive radiation. By migrating to different islands and becoming isolated from other finch populations, the finches adapted to different environments, mostly noted by changes in the beak structure and sizes of the birds. Because different islands had different food types (i.e. seeds, berries, plant types), the birds evolved to live in their surroundings. Evolution didn't mean that the birds just grew larger or smaller beaks. It is a process that involves the birds which were most fit to live in the environment being those who reproduced and allowed the offspring to carry their traits. For example, if a finch only eats seeds of a certain size, but the environment only offers a larger seed, the birds who can manage to eat the larger seeds are the ones who survive. These birds probably also have the larger beak or size; therefore, these are the birds that reproduce, giving the offspring the same traits. The process continues with any environmental change placed on a species.
7
WatchClip duration
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.