Capitolo A11. L'evoluzione degli esseri viventi - ENGLISH #103673

Categories

Which of the following represents the correct ordering of the categories, from largest to smallest?

A:

Era, period, epoch

B:

Era, epoch, period

C:

Epoch, era, period

D:

Epoch, period, era

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Effect of a meteorite collision

The possible collision of a large meteorite with Earth 65 million years ago may explain

A:

the mass extinction that killed off the dinosaurs

B:

the existence of Gondwana

C:

contemporary atmospheric conditions on Earth

D:

continental drift

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Geologists

Which of the following was not known to eighteenth- and nineteenth-century geologists?

A:

Radioactivity can be used to determine the age of rocks.

B:

Fossil organisms found in more recent strata resemble modern organisms.

C:

Certain fossils are always found in younger rocks.

D:

Fossils from more recent strata do not resemble those found in more ancient strata.

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Rocks

Rocks that are formed when grains accumulate at the bottom of bodies of water are called _______ rocks.

A:

igneous

B:

sedimentary

C:

strata

D:

deep

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Natural selection

Which of the following best describes natural selection?

A:

The differential survival and reproduction of individuals

B:

The processes that lead individuals to resemble their parents

C:

The potential for all species to increase rapidly in number

D:

Individuals evolve in response to environmental change

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The origin of genetic variation

The ultimate origin of genetic variation is

A:

mutation

B:

natural selection

C:

nonrandom mating

D:

Competition among organisms

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The causes of mass extinctions

Which of the following is not considered a plausible hypothesis for the causes of mass extinctions?

A:

Extraterrestrial events, such as meteorite or asteroid collisions

B:

Glaciations

C:

Competition among organisms

D:

Climate shifts

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Geological periods

Which of the following geological periods is the most recent (closest to the present)?

A:

Cretaceous

B:

Silurian

C:

Cambrian

D:

Jurassic

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Supercontinents

During the Permian period, all of the continents came together to form one supercontinent known as

A:

Pangaea

B:

Gondwana

C:

Laurasia

D:

Crinoid

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Vascular plants

Vascular plants first appeared during the

A:

Silurian

B:

Cambrian

C:

Permian

D:

Carboniferous

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