Which type of graph would you use to show comparisons

Bar Graphs. They are used to compare two or more things between groups, or track changes, best, over time. Use bar graphs when the over all subject of your measuring are larger, example: growth of a plant over a few weeks compared to another plant, number of kids choosing pizza over soup and so on.

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.