Examlex
Write the equation of the ellipse with foci at (2, 4) , (6, 4) , and b = 2.
Limestone
A sedimentary rock mainly composed of calcium carbonate, often formed from marine organisms.
Quartz Sandstone
Sandstone composed mostly of quartz grains.
Phosphate
A salt or ester of phosphoric acid, often used in fertilizers due to its role in plant energy transfer.
Environmental Advantage
The benefit or edge obtained by using natural resources or ecological principles in a way that promotes sustainability and reduces harm to the environment.
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