Ch. 22 Summary P.597: Question Preview (ID: 5708)


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What process did geologistsuse to determine that the Earth is 4.6 billion years old?
a) relative age dating
b) superposition
c) radiometric dating
d) Miami Heat

Scientists used rocks from the _______ to determine the age of the Earth.
a) Sun
b) Moon
c) Mars
d) outer space

What process helped form Earth's early atmosphere and the oceans?
a) outgassing
b) red bed
c) Tupac
d) oxygen

Which of the following are small and contain no nuclei?
a) tigers
b) plants
c) Sponge Bob
d) prokaryotic cells

The first evidence of multicellular animals comes from
a) oxygen
b) outgassing
c) eukaryotic algae
d) volcanoes

The oxygen contained in the atmosphere comes mainly from
a) the ocean
b) animal waste
c) recycled material
d) photosynthesis

What is the main difference between eukaryotic and prokaryotic cells?
a) eukaryotic cells are smaller
b) eukaryotic cells contain nuclei
c) prokaryotic cells contain nuclei
d) prokaryotic cells are larger

What era are we living in?
a) Mesozoic
b) Paleozoic
c) Quaternary
d) Cenozoic

At the end of what eon did the first continent form?
a) Proterozoic
b) Archean
c) Cambrian
d) Permian

Why was the earth so hot in its early days?
a) abundance of radioactive isotopes
b) too many animals
c) too much water
d) the Sun was too close

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