2.
What is the purpose of paragraph 1?
A to make readers curious about the "hidden" pollution
B. to introduce the topic of pollution on the ground and in trees
C. to argue that pollution on land is a more serious problem than pollution in the
ocean
D. to claim that pollution is becoming harder to see because people are ignoring it

The density would be 1.622

Sink to the bottom. addition of potassium nitrate past it’s dissolution capacity at a particular temperature will cause the extra to just sink to the bottom of the glass.however, if you were to raise the temperature of the solution prior to dissolving it, and then slowly decrease the temperature after the dissolution, you would create a “supersaturated” solution - a solution that has more solute dissolved into it than should be allowed. if you add any extra solute past this, the entire solution would “crystallize,” and this is how you get those cool videos on youtube.