Why are scientists concerned about the depletion of ozone in the stratosphere? 2. What is causing the depletion of ozone in the strogosphere? 3. Explain how this situation was nearly an example of the Tragedy of the Commons 4. How was catastrophe prevented ?

The pressure in a fluid is affected by which characteristics of that fluid

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?