Earth's atmosphere is composed of

A.

iron, oxygen, and silicon.

B.

carbon dioxide, ozone, and magnesium.

C.

water, liquid oxygen, and trace amounts of other liquids.

D.

nitrogen, oxygen, and trace amounts of other gases.

Which three glands secrete the protein fluids which are constituents of semen?

Your friend notes that Gatorade has electrolytes like sodium and potassium chloride. He figures that if a few electrolytes are good for you, then a lot must be even better. Following this logic, he adds nearly a tablespoonful of salt to his Gatorade.

Watch this video about natural selection plate tectonics. The movement of the plates can contribute to the natural selection of organisms.

How much energy is transferred to the next level in a food wed?

What is uniformitarianism?

Can humans be cold-blooded?

Which area shows the climax community of secondary succession?

What type of dragon is the submeripper

Does glucose follow the same path as blood in the kidneys

Explain how to predict y-values using the equation of a regression line.