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3 questions
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- 1. Multiple Choice
The mass of a molecule of water is
3x10-26 kg
3x10-25 kg
1.5x10-26 kg
2.5x10-26 kg
- 2. Multiple Choice
Cell walls of sclerenchyma are rich in
cellulose
pectin
lignin
hemicellulose
- 3. Multiple Choice
When an object is thrown upward, the force of gravity
is
opposite to the direction of motion
in the same direction as the direction of motion
becomes zero at the highest point
increases as it rises up
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