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Charles Darwin
Natural Selection
Evolution
Species
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100
Who is Charles Darwin?
A young naturalist who studied nature.
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What is natural selection?
Natural selection is how individuals are better adapted to their environment are more likely to survive and reproduce than other members of the same species.
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What is evolution?
Evolution is the gradual change in a species over time.
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What is a species?
Species is a group of organisms that can mate with each other and produce fertile offspring.
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Similar structure that related species have inherited from a common ancestor is called ...
... homologous structures.
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Name two things that Darwin observed to come up with the theory of evolution.
Darwin observed the diversity and variation among living things.
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Give at least one example of how natural selection worked with the living thing that Darwin observed.
-In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs. -Galapagos finches all have different types of beaks. During drought, the finches with the larger beaks survived better than those with smaller beaks. During rainy times, more small seeds were produced and the finches with smaller beaks fared better. -In one ecosystem, lizards that had long legs could climb better to avoid floods and reach food.
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Give examples of evolution.
- Similar body structure - Early development ( Embryo ) - Molecular structure - Fossils
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Give an example of a species.
-Human -Birds (-ect.)
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How do fossils form?
Most fossils are formed when organisms that died become buried in sediments.
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Where did Darwin go on his voyage?
- Galapagos - South America - Australia
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Name at one or more examples of what natural selection is.
-Overproduction -Variation -Competition -Selection -Environmental factors
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Wh?
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How do species contribute to the observations of Darwin.
He observed the species of the Galapagos and Mainland n with led to the theory of evolution
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How does a new species form?
A new species can form when a group of individuals remains isolated from the rest of ot species long enough to evolve different traits.
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What was the name of Darwin's book?
"The Origin of Species by Means of Natural Selection or, The Preservation of Favored Races in the Struggle for Life"
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Give an example of natural selection and how it works.
Overproduction - Turtles lay many eggs but not all of them will make it to the ocean because predator will eat them.
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Give one or more examples of selective breeding.
Horses obtain the the trait of speed.
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About how many species of organisms did scientists identify?
Scientist identified about 1.7 million species of organisms.
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What is similar between a dolphin's fin, a bird's wing, a dog's leg and paw, and a crocodile's leg. Explain
- Similar bone structure: - the bones are the same but they are just but together in different ways.
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Who is Charles Darwin and what is the theory of evolution based on?
Darwin was a young naturalist who studied nature on the HMS. The theory of evolution was based on the observations from the Galapagos and Mainland organisms.
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How does genetic variation and environmental factors work together to cause natural selection?
Genetic variation allows some individuals to have better traits for survival than others. Environmental factors can make one of those traits better than another, so the individual with the desirable trait will be more likely to pass on it's genes. Over time this leads to evolution by natural selection.
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What is the theory of evolution?
The theory of evolution is a scientific theory of the origin of species of plants and animals
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What did Darwin infer about the species of organisms in the Galapagos.
Darwin inferred that the species in the Galapagos came from the species of organisms in the Mainland.
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If people evolved form apse and monkey why are there still apse and monkeys?