Upper crust of earth called is
a)hydrosphere
b) topography
c) biosphere
d) ionosphere
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Answer:
I think it is ionosphere
Answered by
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Answer:
Option D Ionosphere is the upper region of the Earth.
Explanation:
Option A- Hydrosphere
It is the total amount of water present on a planet.
Option B- Topography
It is a study of the physical features of a land.
Option C- Biosphere
It is a zone on Earth's surface that has all living things and their interrelations.
Option D- Ionosphere
It is the outer region of the Earth's atmosphere. It stretches between 75km to 1000km from Earth's surface. The ionosphere absorbs harmful UV rays.
Conclusion:
The ionosphere is the outer region of the Earth's atmosphere.
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