Q1. Assume two samples of water are taken just under the surface on a lake, one sample in the early morning, and the other in the late afternoon. Would you guess both samples to have nearly the same DO content?

Q2. Harriet had liposuction several years ago, but has since gained back all the weight lost through the procedure. She does not understand her weight gain since adipocytes are incapable of dividing. Present a plausible explanation.