Things of life
To write
Earth
Sound
100

the study of life 

what is biology

100

This means "to write"

What is graph?
100

This root means Earth

What is geo?

100

This root means sound

What is phone?

200

writing about someone's life

what is biography?

200

A signature

What is autograph?

200

This is a math class you take in school with shapes

What is geometry?

200

Two words that sound the same.

What is homophone?

300

you use this as a medicine

what is antibiotic 

300

Two letters that make one sound

What is digraph?

300

This means the heat of the earth

What is geothermal?

300

This is an instrument

What is xylophone?
400

This is a habitat

What is biome?

400

This means an image written by light

What is photograph?

400

This is the earth's magnetism.

What is geomagnetic?
400

A group of people playing music together.

What is symphony?

500

an area where life exists 

what is biosphere?

500

Trouble with writing.

What is dysgraphia?

500

Writing about earth.

What is geographic?

500

A small device that makes sounds louder.

What is microphone?