EVOLUTION Darwin

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 Evolution is the change in the inherited characteristics of biological populations over successive generations. Evolutionary processes give rise to diversity at every level of biological organisation, including species, individual organisms and molecules such as DNA and proteins.

 http://www.nhm.ac.uk/nature-online/science-of-natural-history/biographies/charles-darwin/
 In 1836 Charles Darwin returned home. He returned to England after five years travelling arround the world, taking as many samples as he could. In his travel, he could notice that there were many types of species. He specially observed the tortoises when he was in the Galapagous, each one with different characteristics. You could see that there were tortoise at first sight, but they were different in some way, for example in the neck. Nothing he investigated during his travel matched together to obtend somthing clear. All was mixed up.
While Darwin was in South America, a man called Charles Lyell wrote a book where he sugested that continents move and originally all continents were together in a big one called Pangea. This theory helped Darwin in his deduction, but it wasn’t the only one. Darwin tried to put that puzzle together:

• Fossils were one of the proves that things had changed. They were similar to nowadays species, but not the same. Evidence of fossils gave support to Darwin’s posterior theory.
• In his travel he discovered the enormous diversity of species, and because of so, they can’t all been spontaneously generated. He realised that specied had to develope according to the enviroment.
• Artificial selection was used since very long time in farming. He started to link how humans select animals to how species change.
• Thumas Malthus wrote an essay called “Principles of population”. That made Darwin to put all the pieces of his puzzle together. Without deaths the world would be overpopulated. Darwin realised that there is always something that prevent overpopulation in species. The big question was, How and Why will they die to prevent overpopulation?

Finally he got the answer. He arrived to this conclusions:

• Species change, and this changes take a long time to occur.
• Because of sepecies change, the number of species will increase.
• As species increase, they all come from a common ancestor.
• The survivers of all this species will emerge because of NATURAL SELECTION.

“Individuals that are borned with better adaptations will be the ones who will survive”.

 This picture it shows how different species come from a common ancestor.

Questions:

1. What is Pangea?

2. What was the essay, that Darwin read related to population, about? 

3. When talking about adaptation, what species will survive?

4. How did Darwin explained that natural selection take place?




MOVIE WORKSHEET

 Name:__________________

Charles Darwin and the Tree of Life

1. What did most of Europe believe for about 2000 years about the origin of species?

2. What was the name of the ship Darwin sailed around the world in?

3. What is significant about the shapes of the tortoise shells in the Galapagos islands?

4. Who did Darwin send his specimens to, back in England?

5. What did Darwin call the process by which species change?

6. How is dog breeding similar to natural selection?

7. What did Alfred Russel Wallace send Darwin in the mail?

8. What was the name of Darwin’s book?

9. What did people find scandalous about Darwin’s book?

10. What can we deduce about a fossil found in sedimentary rock?

11. What fossil that Richard Owen purchased, supported Darwin’s theory?

12. How does the Hoatzin support Darwin’s theory?

13. What does the platypus do that almost every other mammal does not?

14. How did a bishop calculate the age of the earth?

15. How does radio dating work?

16. What is responsible for the distribution of similar species across the globe?

17. How did the eye evolve?

Name:____________________

 

Movie worksheet: Charles Darwin: Species Evolution

1. How did people of the 19^th century (and some still today) believe our world came to be?

2. What did Charles Darwin find that made him wonder about the differences between life long ago and today?

3. What are the bones of prehistoric animals called?

4. What were some of the differences and similarities that Darwin observed on his 5 year voyage?

5. How did he explain the many differences between the many finches, lizards, and turtles in the Galapagos Islands?

6. What did Darwin call his theory?

7. Why is it so difficult to observe evolutionary change during your lifetime?