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How is the bike in the picture a system and how is the Earth a system?

How is the bike in the picture a system and how is the Earth a system?-example-1
User Keenns
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Answer:

The earth is a vast, complex system powered by two sources of energy: an internal source (the decay of radioactive elements in the geosphere, which generates geothermal heat) and an external source (the solar radiation received from the Sun); the vast majority of the energy in the earth system comes from the Sun.

Step-by-step explanation:

becuse

User Fahadsk
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