Aflashlight converts chemical energy into light energy, and light energy can become heat energy and heat energy can become light energy. Given these facts, what can become heat energy among the following options: - objects that have mass - rain or sun shine - Chemical energy - hydrogen and oxygen - an engine - static electricity - centrifugal force - g forces
Chemical energy

Transpiration is when water vapor moves from plants into the atmosphere, and water is made up of H2O molecules. Given these facts, what vapor moves from plants into the atmosphere during transpiration among the following options: - outer space - clouds - H2O - CO 2 - CFCs - CO2 - Dew - H20
H2O

Cells secrete acids and bases to maintain the proper pH for enzymes to work, and enzyme systems efficiency is pH dependant. Given these facts, cells secrete acids and bases to maintain enzyme systems what among the following options: - breakdown - failure - efficiency - it needs them - kinetic - health - distractions - state
efficiency