What was the primary source of light used during the Old Stone Age?
A. Electric lights
B. Candles
C. Oil lamps
D. Fire
Correct Answer: D. Fire
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A. Electric lights
B. Candles
C. Oil lamps
D. Fire
A. Farming
B. Fishing
C. Hunting and gathering
D. Fishing and hunting
A. Surface tension
B. Aqueous tension
C. Vapour pressure
D. Hydraulic pressure
A. Critical temperature
B. Standard temperature
C. Absolute temperature
D. Upper consulate temperature
A. 98.5 atm
B. 96.7 atm
C. 95.8 atm
D. 97.1 atm
A. Daltons law
B. Avogadro’s law
C. Grahams law
D. Charles law
A. Clausius
B. Boltzmann
C. Charles
D. Vander Waal