9) How do the shapes of our ears help us to hear? 1.The ridges in the ear help us capture sound
2.Our ears are large allowing them to pick up quieter sounds
3.Our ears are shaped like a funnel, allowing sound to be funneled into our ear canal
4.Our ears are placed on the side of our head to maximize the sounds we car hear

the wires in the toaster turning red and the toast crisping and turning brown

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.