Why are cirrocumulus clouds sometimes called mackerel clouds

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

What does the cell nucleus do or, how does it function?

Stage in which a star’s outer layers have started to cool and grow outward?