1. Evolution
Origin of species

2. 3 billions years ago to today

3. Millions and millions of years!
Over time the cells changed. New ones were born which were different to its parents and better at finding food!
Because they were better at finding food they grew stronger and reproduced – they had more babies!

4. As more and more were born there were little differences between them – just like you and your friends are different. Some were good at catching other animals to eat and they grew stronger.

5. Some were good at scavenging for food and they grew stronger.

6. Some had shells or weapons to stop being eaten. They grew stronger!
The more they changed and were successful the more they reproduced.

7. After millions and millions of years there were lots of different animals living in lots of different places in the world.

8. Some lived in the sea because they had features that made that a good environment to live in.

9. Some lived in the snow because they had features that made it easier to live there.

10. Some lived in the air because they had features that made it a good environment to live in.

11. Some lived in the desert because they had features that made that a good environment to live in.

12. Charles Darwin 1809-1882 1803180(Charles Darwin 1809-1882)

13. He was ridiculed by the press
Church versus science
It took over 50 years for Darwin's theory to be accepted. His ideas went against the ‘God created the World’
He was ridiculed by the press

14. Are our ancestors the apes?

16. Homo erectus Erect man – as in standing erect i.e. upright
(so put any other thoughts out of your mind!)
The pelvis of primates prevents them from walking upright easily – homo erectus is a link in the evolutionary chain to modern man from the primates

17. Evidence

20. Capacity of skull - brain

22. Evolution is the slow, continual change of organisms over a very long time. All living things on the Earth have developed from the first simple life forms that arrived 3,000,000,000 years ago.
One of the effects of evolution is that species will become better adapted to their environment. If these species don’t adapt they may become extinct due to being unable to deal with any of these factors…
Increased competition
Changes in the environment
New diseases
New predators

23. My key observations:
All living things produce more offspring than survive to adulthood
In spite of this, population sizes remain roughly constant
Variation exists among species
Characteristics can be passed on from one generation to the next.
These observations led me to the conclusion that species evolve over a along period of time by a mechanism called “Natural Selection”. The main evidence for this is from fossil records.

24. Get off my land, you lanky git
Natural Selection
1) Each species shows variation:
Shut it - shorty
There is competition within each species for food, living space, water, mates etc
Get off my land, you lanky git
Yum
Gutted!
The “better adapted” members of these species are more likely to survive – “Survival of the Fittest”
These survivors will pass on their better genes to their offspring who will also show this beneficial variation.

25. Darwin vs Lamarck

26. LAMARK

27. Horse

28. Pentadactyl limb

30. Extinction – adapt or die