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Biologists recently discovered that black wolves got their coat color from exchanging genes with dogs. This is an example of

If you were flying east on a jet across three times zones and your watch read 12:00 noon when you landed, you should

The rule “like dissolves like” explains why liquids are generally soluble in other liquids and gases are soluble in one another.

A protostar is an accumulation of gases in outer space that will become a star.

An alpha particle is really a high-energy electron ejected from the nucleus.

Hot, molten rock, welling up from the earth’s interior, spreads the ocean floor, causing the continents to drift apart.

According to plate tectonics, new crustal material is created at

Water solutions of ionic substances that conduct electricity are called

Nuclei with a higher than desired neutron-to-proton ratio tend to undergo which type of decay?

The two most common ions in seawater are sodium and