Which of the following is a term use to describe a mound, hill of ridge of wind-blown sand? A. peak
B. hill
C. contour
D. dune

Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i