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Why Does A Polar Bear: a) Have White Fur? b ) Have Black Skin? c ) Have a Large Body?

Polar Bear - U rsus maritimus. Why Does A Polar Bear: a) Have White Fur? b ) Have Black Skin? c ) Have a Large Body?. White Fur?. To blend with habitat. Black Skin?. Better heat absorption from the sun . Large Body?. To eat large prey (seals). IT IS EVOLUTION!!!. Why is this

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Why Does A Polar Bear: a) Have White Fur? b ) Have Black Skin? c ) Have a Large Body?

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  1. Polar Bear - Ursus maritimus Why Does A Polar Bear: a) Have White Fur? b) Have Black Skin? c) Have a Large Body?

  2. White Fur? To blend with habitat BlackSkin? Better heat absorption from the sun LargeBody? To eat large prey (seals) IT IS EVOLUTION!!! Why is this important?

  3. EVOLUTION UNIT

  4. What does the word Evolutionmean to you?

  5. Some Definitions Definition Term Species Organisms in a population that produce fertile offspring Adaptation Genetic trait that increases chances of survival Differences between individuals of a population Variation The function a species plays in its habitat Niche

  6. Which of the following is a closely-related 
modern descendent of the T-rex? Alligators evolved from the T. rex, but the closest 
living relatives of the dinosaur, according to 
biochemistry, are ostriches and chickens.

  7. MISCONCEPTION: Scientific theories are more like hypotheses and are supported like scientific laws. Hypothesis: Is a suggested explanation of observations, which can be tested by further research or experiments. Theory: Is a set of statements that explains a group of facts or phenomena. The statements have been tested repeatedly and are supported by evidence. Introductory Activity (LMC-4)

  8. Charles Darwin developed a theory to  explain the diversity of life. A theory is a set of statements that explains a group of facts or phenomena. These statements have been tested repeatedly 
and are supported by evidence. Darwin’s theory of evolution suggests that all of today’s 
species are descendents of ancient species. Theories have developed with contributions from many 
scientists; and changed as a result of new technologies.

  9. Before Darwin, there were two prominent beliefs about 
the diversity of life on Earth. All species were the same as they had always been. Earth, and its species, were less than 10 000 years old, and were relatively unchanged.

  10. The theory of evolution helps us 
understand the diversity of life: 
Steps Leading Up to Charles 
Darwin’s Theory Charles Darwin’s ideas have upset 
many people since he first 
proposed them.

  11. Scientists Contributions to the Theory of Evolution

  12. How Was This Theory Formed? ? Darwin's Voyage The HMS Beagle, travelled to South America in 1831
 Darwin collected samples and specimens, and wrote extensively in his 
 journals.

  13. He noticed three patterns on his journey: 1) Species varied , but there were similarities between some species such as emus, ostriches, and rheas. 2) Species varied , especially on islands, as similar species in different habitats had different features, such as the finches of the Galapagos Islands. 3) Species varied , which Darwin noted while studying fossils on his journey. GLOBALLY LOCALLY OVER TIME Galapagos finches appeared to be descendents 
of a common ancestor, but each species had 
unique beaks for their niche.

  14. Darwin Movie Questions http://www.youtube.com/watch?v=vmphlbRhLu8 1. Who was Charles Darwin? (3 points) 2. What islands helped Darwin make his theory? Give 1 reason describing what they did to help him? 3. What is the central idea to Evolutionary Theory? 
(1 point) 4. Why did Darwin take so long to publish his theory? 
(2 reasons) 5. What is Darwin's central 'mechanism' that describes 
Evolutionary Theory?

  15. Tree of Life Video Timeline Graph

  16. Basic Timeline of Life

  17. What does Evolution tell us? Evolution tells us how life forms have changed over time What did Charles Darwin 
conclude? Nature Selects the most fit organisms to survive

  18. Quick Write Questions? 1. What does 'evolution' mean for 
biological life? 2. Why doe Charles Darwin believe 
life has a single, common ancestor?

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