What is the process called when gas moves from an area of high pressure to an area of low pressure: Effusion
The movement of molecules from high to low concentration, requiring no energy, is called: Diffusion
It is not advisable to sleep under tree at night because of the release of: Carbon dioxide
Which gas can be accumulated in poorly ventilated buildings: Radon
The main constituent of Hemoglobin is: Iron
Which of the following is known for its ability to replicate itself: Bacteria
By what percentage does water expand when it freezes: 9%
The most important stimulus for tea leaves: Caffeine
Which layer of the Earth is considered the most important: Mantle
In which is more electricity conducted: Steel
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