Scientists can estimate the age of a planetary surface by counting scientists can estimate the age of a planetary surface by counting volcanoes tectonic features impact craters erosion features

The surface of the planets can explain the dynamics of planetary interiors (for example, how often volcanoes erupt or how often earthquakes occur). In order to see how much the surface has changed over time the age of the surface should be obtained. Scientists can estimate the age of a planetary surface by counting craters. The logic is that the largest bodies (the ones that would form the largest craters) were used up before the smaller ones, since there were fewer of the larger ones to start with. So the larger a crater is, the older the planet surface.

The third hammer 8 pounds

Iread this book last year so take this with a grain of salt.gene jumps from the tree to compete with finny due to the fact that gene is always trying to do better than finny. he is put under the grasp of peer pressure due to finny almost forcing him to do this. ever since he first jumped finny kept pressuring him to jump since he thought gene enjoyed jumping.rather than uses this answer you should probably just reread chapters 3-4