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saw5 [17]
3 years ago
5

Scientists find dense rock on Earth's surface that is made of magnesium and smaller amounts of silicon. What layer of Earth migh

t the rock help scientists study?
Biology
2 answers:
ELEN [110]3 years ago
8 0
Oh the answer is the Mantle, You can look at a chart and easily find the answer if you don't believe me. But here is a reasoning; Magnesium as well as Aluminum are located within the Mantle.
Mama L [17]3 years ago
8 0
From the crust or mantle
1. By studying things from Earths layers that have been pushed up through the cracks of the crust.

2.By measuring diffrent kinds of vibration from earthquakes

3.By doing laboratory expirements
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. What is the relationship between quantity demanded and quantity supplied at equilibrium? What is the relationship when there i
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Answer:

  • At equilibrium, the quantity of a commodity demanded is the same as the quantity of that commodity supplied. i.e. QD = QS. The price at which QD = QS is the equilibrium price.
  • When there is a shortage, the quantity of goods demanded would be greater than quantity supplied, as the price falls below the equilibrium price. i.e. QD>QS
  • When there is surplus, the quantity of goods demanded is less than the quantity supplied, as price increases above the equilibrium price. i.e. QD<QS.

For example, in the table showing the demand and supply schedule for T shirt at different prices (see file attached), the equilibrium price for a unit of T shirt is $3, at equilibrium, QD = QS (i.e. 30 = 30).

A shortage is recorded when the price of T shirt falls below equilibrium price of $3 as shortage of T shirt is recorded, i.e. @ $2, QD>QS (40>20). A shortage of 20 is recorded.

Surplus occurs as price increases above equilibrium price of which QD<QD, i.e. @ $4, a surplus of 20 is recorded.

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