bios (life)
prae (before, in front of)
duo (two)
phone (sound)
terra (land)
100

The study of life.

What is biology?

100

To say beforehand, or foretell.

What is predict?

100

A piece of music played by two people.

What is a duet?

100

A sound-producing machine.

What is a phonograph?

100

An area of land under the jurisdiction of a ruler or state.

What is a territory?

200

A written life story.

What is a biography?

200

Being on guard beforehand.

What is precaution?

200

To make a copy of something.

What is duplicate?

200

A device that transmits voices over long distances.

What is a telephone?

200

A garden in a glass container.

What is a terrarium?

300

A very tiny form of life that can cause disease.

What is a microbe?

300

To make judgment beforehand.

What is prejudice?

300

Doubtful; suspicious; "of two minds."

What is dubious?

300

An elaborate musical composition for full orchestra. 

What is a symphony?

300

A small dog that hunts for burrowing game.

What is a terrier?

400

A creature who can live on both land and water.

What is an amphibian?

400

A preliminary statement; the introductory part of a statute or deed. 

What is a preamble?

400

Two homes in one building.

What is a duplex?

400
Part of the book that goes before the first chapter.
What is a prologue?
400

Of or from outside the earth or its atmosphere.

What is extraterrestrial?

500

Something that inhibits the growth of living organisms that can invade the body.

What is an antibiotic?

500

A person or thing that comes before another of the same kind; a forerunner.

What is a precursor?

500

"Two-faced'; deceitful.

What is duplicitous?

500

Each of two or more words having the same pronunciation but different meanings, origins, or spelling.

What is a homophone?

500

Unglazed, typically brownish-red earthenware; "cooked earth."

What is terra cotta?

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