It changed -10% because 2g out of 20g is 1/10 and it is negative because it leaves the bag.
Renewable sources of energies are those who can grow again, such as trees and plants, or that can always reappear, such as wind and solar energy. Nonrenewable energy, however, cannot be regenerated, like oil and coal, or are mined minerals.
The answer here would be A, as a gold necklace is made of a mined substance, which is nonrenewable.
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it’s c, i’m trying to answer my first question
