Answer:
b
Explanation:
it is luminosity, which is the total amount of light, or energy, emitted by a star.
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Answer:
An increase in the average income of consumers in the market
Explanation:
Demand may go up if substitutes increase in price, but that demand increase might not tolerate much of an increase in price. Consumers will be more likely to pay more if they have more disposable income.
Any change in sellers will affect the supply curve, not the demand curve.
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run really fast on 4 legs
my mother
teach them tricks