The correct answer is dynamo theory. The theory that explains the source of Earth's magnetic field is the dynamo theory. This theory proposes the mechanism of a celestial body such as Earth to generate magnetic field.
100%-9%=91%
$819/91%=$900
100%+5%=105%
$900x105%=$945
Answer: He should sell it at $945 to make a profit of 5%.
Answer:
decreases
Explanation:
when the acidity in a solution increases the ph will decrease. when the acidity in a solution decreases the ph increases
