Transcript LB1

CHAPTER
NEW CHAPTER
The History of Life on Earth
the BIG idea
Living things, like Earth itself, change over time.
1.1 Earth has been home to living things for about 3.8 billion years.
1.2 Species change over time.
1.3 Many types of evidence support evolution.
CHAPTER OUTLINE
CHAPTER RESOURCES
1.1
CHAPTER HOME
KEY CONCEPT
Earth has been home to living things for about
3.8 billion years.
Fossil records inform humans about the development
of life on Earth. Information from fossils can help
scientists reconstruct Earth's history.
VOCABULARY
fossil
unicellular
organism
multicellular
organism
mass extinction
250 million years ago
70 million years ago
55 million years ago
VISUALIZATION
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Explore how fossils form.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.2
CHAPTER HOME
KEY CONCEPT
Species change over time.
Darwin's theory of natural selection explains evolution.
VOCABULARY
evolution
Four principals of natural selection are
natural selection
• overproduction
adaptation
Overproduction
speciation
adult
salmon
eggs
CHAPTER
RESOURCES
SECTION
OUTLINE
1.2
CHAPTER HOME
KEY CONCEPT
Species change over time.
Darwin's theory of natural selection explains evolution.
VOCABULARY
evolution
Four principals of natural selection are
natural selection
• overproduction
adaptation
• variation
speciation
Variation
CHAPTER
RESOURCES
curve
SECTION
OUTLINE
1.2
KEY CONCEPT
CHAPTER HOME
Species change over time.
Darwin's theory of natural selection explains evolution.
VOCABULARY
evolution
Four principals of natural selection are
natural selection
• overproduction
adaptation
• variation
Adaptation
speciation
• adaptation
CHAPTER
RESOURCES
SECTION
OUTLINE
1.2
KEY CONCEPT
CHAPTER HOME
Species change over time.
Darwin's theory of natural selection explains evolution.
VOCABULARY
evolution
Four principals of natural selection are
natural selection
• overproduction
adaptation
• variation
Selection
speciation
• adaptation
• selection
SIMULATION
Match different finch
beaks with the foods
they eat, and learn how
each beak functions.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.3
CHAPTER HOME
KEY CONCEPT
Many types of evidence support evolution.
Three different types of evidence provide a bigger
picture of evolution
VOCABULARY
ancestor
vestigial organ
gene
fossil
genetic
CHAPTER
RESOURCES
biological
SECTION
OUTLINE
1.1
KEY CONCEPT
CHAPTER HOME
Earth has been home to living things for about
3.8 billion years.
I. Earth has been home to living things for about 3.8
billion years.
A. Fossils provide evidence of earlier life.
1. Types of Fossils
2. Finding the Age of Fossils
3. Assembling the Fossil Record
B. More complex organisms developed over time.
1. Unicellular Organisms
2. Multicellular Organisms
3. Life on Land
C. Earth’s history includes mass extinctions.
1. Permian Extinction
2. Cretaceous Extinction
VOCABULARY
fossil
unicellular
organism
multicellular
organism
mass extinction
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
1.2
KEY CONCEPT
CHAPTER HOME
Species change over time.
II. Species change over time.
A. Scientists explore the concept of evolution.
1. Early Ideas
2. Darwin’s Observations
VOCABULARY
evolution
natural selection
adaptation
speciation
B. Natural selection explains how living things
evolve.
1. Overproduction
2. Variation
3. Adaptation
4. Selection
CHAPTER
RESOURCES
5. Isolation
KEY CONCEPT
SUMMARY
1.2
KEY CONCEPT
CHAPTER HOME
Species change over time.
II. Species change over time.
C. New species develop from earlier species.
1. Speciation
2. Isolation
VOCABULARY
evolution
natural selection
adaptation
speciation
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
1.3
CHAPTER HOME
KEY CONCEPT
Many types of evidence support evolution.
III. Many types of evidence support evolution.
A. Observations provide evidence for theories.
B. Fossil evidence supports evolution.
VOCABULARY
ancestor
vestigial organ
gene
C. Biological evidence supports evolution.
1. Similarities in Structure
2. Similarities in Development
D. Genetic evidence supports evolution.
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
CHAPTER HOME
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