If devices require kinetic energy to function, then devices require to function? Answer choices: - A kernel - hydration - an electron lens - hydrogen and oxygen - heating liquids - a hydraulic system - kinetic energy - Something to move
kinetic energy

If abreathing mask is used for keeping aerosols from entering the respiratory system, then what can be used for keeping aerosols from entering the respiratory system? Answer choices: - goggles - hydration - sweating - hydrogen and oxygen - breathing masks - lab coats - layers of fat - gloves
breathing masks

If fourty percent of the total mass of organisms at a trophic level is carbon, then what is fourty percent of the total mass of organisms at a trophic level? Answer choices: - Energy. - carbon - pan - glucose - matter - Energy - fungi - food
carbon