Can a tank of oxygen gas ever be half empty?

Gunpowder residue is most likely to show up where on a shooters hands

This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above