Iron is denser than magnesium.
Hope this helps!
Equator
The Equator is the invisible line that runs around the center of the Earth at 0 degrees latitude. An equator is an imaginary line around the middle of a planet or other celestial body. It is halfway between the North Pole and the South Pole, at 0 degrees latitude.
source of info: Goo_gle
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Divide the globe in to 2 and 4 pieces. Above the line of the equator is the northern hemisphere and below is the southern. And just like a compass we have north east and west and south east and west
The word that means to protect from harm or being killed is defend.