What is not a potential risk of purchasing a used car?

used cars can require repairs sooner
warranties can be very limited
used cars can have lower initial cost
unexpected issues may arise

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt

10111213141516lactic acid fermentation differs from ethyl alcohol fermentation in thato in ethyl alcohol fermentation co2 is also producedlactic acid fermentation can occur in all living thingsethyl alcohol fermentation can only occur in plantsonly lactic acid fermentation can produce more atp