Ques No.1: In night, when photosynthesis is stopped, plants
Ans: Give off carbon Dioxide
Ques No.2: During photosynthesis, plants
Ans: Give off oxygen
Ques No.3: _________are called the powerhouses of the cell.
Ques No.4: Mitochondria contain their own supply of
Ques NO.5: The first chemical explosive, Gunpowder, is a mixture of
Ans: Sulfur, Charcoal, and Potassium Nitrate
Ques No.6: The number of oscillations per second is called the
Ques No.7: Sound waves from a loudspeaker are caused by
Ques No.8: The guitar has___________strings.
Ques No.9: The device used to measure movements of the heart is
Ques No.10: The unit used to measure "Pressure' is