Nobody can score a perfect 10
To which answer are clouds most closely related?
Which of these is a parasitic relationship?
Cumulus and stratus are types of what?
Which of the following energy sources do gardens rely on most for survival?
What type of switch allows you to reset the circuit?
What piece of polished, cut glass can we use to see the spectrum of visible light?
Which of these is a part of blood?
What element in a liquid state is used in the cryogenic cooling of devices and materials?
What is the smallest part of matter called?
What are the huge storms that the sun produces called?
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Can you beat the score of this nurse?
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Who or what am I?
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