Which option describes energy being released as heat? A. Lions sleeping after a big meal
B. A baby bird eating a worm
C. A child shivering in the cold
D. A surfer on a surfboard

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Does the energy in a solid increase or decrease when changing to a liquid?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer