Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was...

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Evolution Ideas That Shaped Darwin’s Thinking

Transcript of Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was...

Page 1: Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was only a few thousand years old Most believe species and.

Evolution

Ideas That Shaped Darwin’s Thinking

Page 2: Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was only a few thousand years old Most believe species and.

At the time…

• Most people believed the Earth was only a few thousand years old

• Most believe species and the Earth has NEVER changed

• Most, but not all! New fossil evidence begins to shift many people’s veiwpoints

Page 3: Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was only a few thousand years old Most believe species and.

Geology Perspective

• Hutton- proposed that Earth changes over time, including the rock cycle and other natural forces shape the earth; proposed the Earth is millions of years old

• Lyell- proposed how volcanoes and other geologic forces can build and destroy landscapes

Page 4: Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was only a few thousand years old Most believe species and.

Darwin’s Take…

• Darwin thought if the Earth could change, why couldn’t life change?

• Also, if the Earth is changing, plants and animals MUST change to survive!

• This begins his new theory of evolution.

Page 5: Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was only a few thousand years old Most believe species and.

Economy/Ecology Perspective

• Malthus: reasoned that if the human population continued to grow unchecked, food and shelter will run out (carrying capacity)

• This idea alone sprung forth the steps to natural selection.

Page 6: Evolution Ideas That Shaped Darwin’s Thinking At the time… Most people believed the Earth was only a few thousand years old Most believe species and.

Other Evolution Hypotheses

• Lamarck: stated that selective use or disuse of organs causes organisms to acquire or lose certain traits…

• Then, these traits can be passed on to offspring

• Ex:Crab Claw • Is this a valid hypothesis? Can you think

of your own example?


Supernova remnants (SNRs) are believed to be the most promising ...

Supernova remnants (SNRs) are believed to be the most promising ...

Chapter 15b $100 $200 $300 $400 $500 $100$100$100 $200 $300 $400 $500 Darwin’s Case FINAL ROUND Life’s Diversity Darwin’s Thinking Darwin’s Case.

Chapter 15b $100 $200 $300 $400 $500 $100$100$100 $200 $300 $400 $500 Darwin’s Case FINAL ROUND Life’s Diversity Darwin’s Thinking Darwin’s Case.

. Chapter 22: Evolution Historical perspective on evolution Historical perspective on evolution Darwin’s voyage Darwin’s voyage Darwin’s theory: evolution.

. Chapter 22: Evolution Historical perspective on evolution Historical perspective on evolution Darwin’s voyage Darwin’s voyage Darwin’s theory: evolution.

Darwin’s Women

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Darwin’s Fishes - National-Academies.orgsites.nationalacademies.org/cs/groups/pgasite/documents/webpage/... · Darwin’s Fishes: Why should we care ... Most species yet to be discovered

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16.2 Applying Darwin’s Ideas. Objectives What does Darwin’s theory predict? Why are Darwin’s ideas now widely accepted? What were the strengths and weaknesses.

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Darwin’s Theory outline notes Pages 138-145 1. 1. Darwin’s Observations Darwin’s important observations included the diversity of living things, the.

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Scientists: Which scientific advance has had the most impact on people’s everyday lives? #3: Darwin’s theory of evolution.

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