In the curcute diagram what does the symbole made of two long lines and two short lines with a positive and a negitive sighnat each end represent

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

How have the greenhouse gasses increased from the year 2000 to 2018

Can someone me with 6 to 10 plz this is for masteries test.