Natural Selection, taxonomy, Earth's History

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What is the Mesozoic Era?

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The Mesozoic Era is the geological era during which dinosaurs thrived, lasting from about 252 to 66 million years ago.

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What is a defining characteristic of organisms in the phylum Chordata?

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All organisms in the phylum Chordata have backbones.

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What is a vestigial structure?

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A vestigial structure is a body part that has lost its original function through evolution, such as human wisdom teeth.

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NGSS.MS-LS4-2

Front

How long was a day on Earth when it first formed?

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A day on Earth was about 10 hours long when it first formed.

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NGSS.HS-ESS1-6

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What are analogous structures?

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Analogous structures are body parts in different species that have the same function but do not share a common evolutionary origin, like the wings of a butterfly, bird, and bat.

Tags

NGSS.MS-LS4-2

Front

What is natural selection?

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Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

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What is taxonomy?

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Taxonomy is the science of classifying organisms into groups based on shared characteristics.

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What is the Paleozoic Era?

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The Paleozoic Era is the geological era that preceded the Mesozoic Era, known for the emergence of fish, amphibians, and reptiles.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What is the significance of homologous structures?

Back

Homologous structures are body parts in different species that share a common ancestry, indicating evolutionary relationships.

Tags

NGSS.MS-LS4-2

Front

What is the Cenozoic Era?

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The Cenozoic Era is the current geological era, known as the 'Age of Mammals,' which began about 66 million years ago.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2