They study the human body
I'd say A: tidal waves. B, C, and D don't really seem to fit for me.
It causes cultural change by bringing in diffrent cultures and traditions into a superior culture making it into a melting pot
6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
Carbon dioxide + water + energy from light produces glucose and oxygen.
Answer:
Independent variable - time. Dependent variable - the distance moved by the bubble along the capillary tube. Control variables - temperature, air flow or draughts, adequate supply of water.
