What can a boy experience during puberty when his vocal cords change and his voice changes?

Which of these should be re portable health diseases to protect public health? a- obesity b- measles c- diabetes d-lung cancer

Describe in your own words three purposes of human services.

Which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.