Evidence Of

The study of the early stages of development that is one evidence of evolution is:

• Homologous Structures

• Embryology

• Vestigial Organs

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The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment

• The organisms shown may have developed from a common ancestor

• The organisms shown have the same genetic diseases

• All vertebrate species have identical forelimbs

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What can the arm bones of humans and bats show us? That they...

• .. shared an ancestor whom had that arm structure

• ... will eventually evolve into similar creatures

• ... share a gene pool

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Predict which moth would increase in population

• light 

• dark

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The opossum and kangaroo both incubate their young in a pouch. This provides evidence that they---

• are descended from a common ancestor

• Have very similar skeletal structures

• belong to the same species

• must range great distances to eat

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Which statement below best explains how evolution by natural selection influenced the variation demonstrated by the cat family - Felidae?

• Different traits evolved in each species in order to adapt to the environment where they live.

• Members of Felidae do not share common ancestors so each species has their own unique traits.

• Cats have largely been unaffected by evolution because they are bred and influenced by humans.

• Different adaptations observed in Felidae are not significant enough to be influenced by natural selection.

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Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry

• We can observe changes in life forms by observing the fossil record

• Many animals have vestigial structures from an ancestor

• All of these are evidence for evolution

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In 1861 paleontologists announced that they had found a fossil with feathers, now known as, Archaeopteryx, which lived approximately 150 million years ago. When comparing Archaeopteryx to other small dinosaurs and modern-day birds, the paleontologists learned that Archaeopteryx had more in common with dinosaurs. The Archaeopteryx were small and had broad wings which likely gave them the ability to fly or glide. How can the Archaeopteryx fossils be used to support the theory of evolution?

• They can demonstrate that animals from long ago are still alive today.

• They show how organisms today share characteristics with fossilized species.

• They give evidence to support the idea that organisms inherit the best traits from their

  parents.

• They indicate that evolution is a theory because scientists do not completely understand

  the fossil record.

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Scientists are able to explain why the plates move on Earth's surface using seafloor spreading as evidence. Which statement below explains why this is an accepted theory?

• It states the relationship between the seafloor and the continents.

• It states the exact movement and rate at which the plates move around on Earth.

• It explains why certain areas on Earth's surface experience earthquakes and volcanoes

• Several geologists have been able to predict that our continents will move back together in 100 years

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Below is a list of evidences scientists have gathered on the theory of plate tectonics over time. Continental boundaries showed evidence that they fit together and once formed a single landmass that separated and drifted apart. Rocks of different ages show changes in magnetic field direction. Oceanic crust disappears into the mantle (sea floor spreading) Why is the collection of evidence necessary for plate tectonic theory?

• Scientists do not understand the theory of plate tectonics so it needs to be modified

• A theory needs a large body of evidence to support our understanding of natural events.

• A theory must be supported with evidence from each scientist studying the natural event

• Scientists should always add more evidence to existing theories, so they cannot be disproved.

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