Rocks and Minerals
Ecosystems
Misc
Pulleys and Gears
Light and sound
100

The softest mineral in the world is diamond.

False! It is talc. 

100

Apex are at the bottom food chain.

False! They are at the top!

100

There are seven simple machines that help to make work easier. 

True! They are lever, pulley, inclined plane, screw, wedge, wheel, axle and gear.

200

Red blood cells fight disease, and white blood cells carry oxygenated blood throughout the body.  

False! It's the other way around!

500

Blue light has a low frequency, and red light has a high frequency. 

False! It's the other way around!

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