In which two layers of the atmosphere is cooler air always located above warmer air?

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?