Transcript Chapter 06

CHAPTER
NEW CHAPTER
Evolution of Living Things
the BIG idea
Species develop and change over time.
6.1 Earth has been home to living things for about
3.8 billion years.
6.2 Species change over time.
6.3 Environmental changes can affect populations.
6.4 Many types of evidence support evolution.
CHAPTER OUTLINE
CHAPTER RESOURCES
6.1
KEY CONCEPT
CHAPTER HOME
Earth has been home to living things for
about 3.8 billion years.
CALIFORNIA
Content Standards
VOCABULARY
extinction
mass extinction
7.4.b Students know the history of life on Earth has
been disrupted by major catastrophic events, such as
major volcanic eruptions or the impacts of asteroids.
7.4.e Students know fossils provide evidence of how
life and environmental conditions have changed.
CHAPTER
RESOURCES
SECTION
OUTLINE
6.1
CHAPTER HOME
KEY CONCEPT
Earth has been home to living things for
about 3.8 billion years.
Fossil records tell us about the development of life on
Earth. Information from fossils can help scientists
reconstruct Earth’s history.
250 million years ago
70 million years ago
55 million years ago
VISUALIZATION
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VOCABULARY
extinction
mass extinction
CHAPTER
RESOURCES
SECTION
OUTLINE
6.1
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.
VOCABULARY
extinction
mass extinction
B. More complex organisms developed over time.
1. Early Forms of Life
2. Multicellular Organisms
3. Life on Land
C. Earth’s history includes mass extinctions.
1. Permian Extinction
2. Cretaceous Extinction
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
6.2
KEY CONCEPT
CHAPTER HOME
Species change over time.
CALIFORNIA
Content Standards
7.3.a Students know both genetic variation and
environmental factors are causes of evolution and
diversity of organisms.
VOCABULARY
evolution
natural selection
population
genetic variation
adaptation
7.3.b Students know the reasoning used by Charles
Darwin in reaching his conclusion that natural
selection is the mechanism of evolution.
environmental
factors
speciation
CHAPTER
RESOURCES
SECTION
OUTLINE
6.2
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
population
genetic variation
adaptation
environmental
factors
speciation
CHAPTER
RESOURCES
SECTION
OUTLINE
6.2
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
population
• variation
genetic variation
adaptation
environmental
factors
speciation
CHAPTER
RESOURCES
SECTION
OUTLINE
6.2
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
population
• variation
genetic variation
• adaptation
adaptation
environmental
factors
speciation
CHAPTER
RESOURCES
SECTION
OUTLINE
6.2
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
population
• variation
genetic variation
• adaptation
adaptation
• selection
environmental
factors
speciation
SIMULATION
Match different finch
beaks with the foods
they eat, and learn how
each beak functions.
CHAPTER
RESOURCES
SECTION
OUTLINE
6.2
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
B. Natural selection explains how new species
evolve.
VOCABULARY
evolution
natural selection
population
genetic variation
adaptation
1. Overproduction
environmental
factors
2. Variation
speciation
3. Adaptation
4. Selection
CHAPTER
RESOURCES
C. New species develop from earlier species.
KEY CONCEPT
SUMMARY
6.3
KEY CONCEPT
CHAPTER HOME
Environmental changes can affect
populations.
CALIFORNIA
Content Standards
7.3.e Students know that extinction of a species
occurs when the environment changes and that the
adaptive characteristics of a species are insufficient
for its survival.
VOCABULARY
immigration
emigration
limiting factor
CHAPTER
RESOURCES
SECTION
OUTLINE
6.3
KEY CONCEPT
CHAPTER HOME
Environmental changes can affect
populations.
• Populations increase through births and immigration
and decrease through deaths and emigration.
• Limiting factors such as food, shelter, disease, and the
effects of sudden events control population size.
•Most extinctions occur population by population over
time.
VOCABULARY
immigration
emigration
limiting factor
CHAPTER
RESOURCES
SECTION
OUTLINE
6.3
KEY CONCEPT
CHAPTER HOME
Environmental changes can affect
populations.
III. Environmental changes can affect populations.
A. Population size is limited by environmental
conditions.
B. Populations increase through births and
immigration.
C. Many factors limit population size.
VOCABULARY
immigration
emigration
limiting factor
1. Competition
2. Predators
3. Disease
4. Catastrophic events
D. The survival of a species depends on its
ability to adapt change.
1. How Extinction Happens
2. Extinction and Species Replacement
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
6.4
CHAPTER HOME
KEY CONCEPT
Many types of evidence support evolution.
CALIFORNIA
Content Standards
7.2.e Students know DNA (deoxyribonucleic acid) is
the genetic material of living organisms and is located
in the chromosomes of each cell.
VOCABULARY
theory
ancestor
vestigial organ
7.3.c Students know how independent lines of
evidence from geology, fossils, and comparative
anatomy provide the bases for the theory of evolution.
CHAPTER
RESOURCES
SECTION
OUTLINE
6.4
CHAPTER HOME
KEY CONCEPT
Many types of evidence support evolution.
Three different types of evidence provide a bigger
picture of evolution.
VOCABULARY
theory
ancestor
vestigial organ
fossil evidence
genetic evidence
CHAPTER
RESOURCES
biological evidence
SECTION
OUTLINE
6.4
CHAPTER HOME
KEY CONCEPT
Many types of evidence support evolution.
IV. Many types of evidence support evolution.
A. Observations provide evidence for theories.
B. Fossil evidence supports evolution.
VOCABULARY
theory
ancestor
vestigial organ
C. Biological evidence supports evolution.
1. Similarities in Structure
2. Similarities in Development
D. Genetic evidence supports evolution.
Open your books to page 210.
CHAPTER
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KEY CONCEPT
SUMMARY
CHAPTER HOME
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