Mathematics (Find the Value of X)
21 - x = 15
x = 6
It measures the distance North or South of the Equator
latitude
The layer of gases surrounding the Earth
atmosphere
One-fourth (one quarter) of 96
24
x + 11 = 42
x = 31
A body of water surrounded by land on three sides but larger than a bay
gulf
The part of the Earth's crust consisting of rocks and soil
geosphere
63 - x = 31
x = 32
A group of islands
archipelago
It includes all of the Earth's water
hydropshere
45 + x = 90
x = 45
Located northeast of Canada, eighty percent of this land mass is covered by ice
Greenland
All living things, including plants and animals
biosphere
100 - x = 49
x = 51
The large mountain range which extends from western Canada to the state of New Mexico
Rocky Mountains
The name of the "cycle" which traces the movement of water between the spheres