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SCIENCE STUFF

Teacher: Mr. Cornell
Across
What keeps the planets orbiting around the sun is ___________.
My favorite science teacher is ___________.
A gas that turns into a liquid is called ___________.
The kidneys and bladder are part of the ___________ system.
Urine flows from the kidneys down tubes called ___________.
Kidneys create ___________.
Down
Urine is stored in the ___________.
In a controlled experiment, the part that is changed is the ___________ variable.
Our sun is made of helium and ___________.
Organs that clean and filter the blood are the ___________.
A liquid that turns into a gas is called ___________.
Organisms that eat dead things and recycle nutrients are ___________.
What makes plants green is ___________.
Muscles that relax to release urine are the ___________.