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Our Planet Earth Answers

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According to the online content article about days and nights on Earth, why does the length of a day change throughout the year?

A
because the Sun revolves around the Earth
B
because the Earth’s axis is tilted
C
because it takes a year for the Earth to rotate once
D
because the Earth’s orbit is not elliptical
3

Which of the Earth’s spheres is made up of all living things?

A
the atmosphere
B
the biosphere
C
the lithosphere
D
the hydrosphere
5

What does it mean to sustain something?

A
to rotate around it
B
to destroy it
C
to divide it into parts
D
to preserve it or care for it
6

An organism is a __________.

A
body of water
B
piece of the Earth’s crust
C
living thing
D
part of the atmosphere

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Our Planet Earth Answers — W Geography_A_IC