(Q).
If aflashlight requires a battery to produce light, then what requires a battery to produce light? Answer choices: - flashlight - energy - mirror - microscope - direct energy - fire - cactuses - glowworm
(A).
flashlight

(Q).
If most people can survive only a few days without H20, then most people can survive only a few days without what? Answer choices: - carbon dioxide - oxygen - h2o - H20 - NaCl - CO2 - soda - urea
(A).
H20

(Q).
If riding a bike does not cause carbon monoxide, then what doesn't riding a bike cause? Answer choices: - Allergies - harmful substances - Decrease bodily water - Greenhouse gasses - carbon monoxide - global warming - Dehydration - chemical changes
(A).
carbon monoxide