Chapter 25 - The History qrqrqof Life on Earth (copy)dsdsdsd

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Radiometric datingaazz

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Radiometric datingaazz

________ and other methods can be used to estimate the ages of fossils.dd

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I’m going back to the house to go to the gym with the girls for the night so I’ll let you know if you need anything or do I need to get something for dinner tonight and I will let you know if you need anything or not that I know what I want you know I’m sorry for that I know

I’m going back to the house to go to the gym with the girls for the night so I’ll let you know if you

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3

Adaptive radiations

________ have also occurred in groups of species that possessed significant evolutionary advances or colonized new areas with minimal competition from other creatures.

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4

organic molecules

The abiotic (nonliving) synthesis of small ________, such as amino acids and nitrogenous bases.

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5

Plate tectonics

________ describes the slow movement of continental plates through time, affecting the physical geography and climate of the Earth, resulting in extinctions in some groups and speciation in others.

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6

fossil record

The ________ demonstrates how new groupings of creatures can emerge through the progressive alteration of preexisting ones.

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7

broad pattern of evolution

The term*** macroevolution*** refers to the sweeping changes in life on Earth as revealed by fossils of which the ________ is above the species level.

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8

Natural selection

________ in a changing environment or species selection as a consequence of interactions between organisms and their present habitats can both generate evolutionary trends.

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9

Fossils of microbes

________ that existed 3.5 billion years ago provide direct proof of life on early Earth.

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10

Adaptive radiations

________ that occurred after catastrophic extinctions resulted in significant increases in biological variety.

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