How did the mass extinction of the Paleozoic era compare with other extinctions?

Which of these best describes an ionic bond?

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

Using data from seismic waves, geologists have learned that earth’s interior is made up of several