Which one is correct?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j