<span>Radiometric dating Is the correct answer :)</span>
One activity that would have a big impact would be of cutting down tress, or the burning of the whole forest. The forest ecosystem consists of many animals, they benefit each other because they prevent one of them from overpopulating. If one of the animals of the ecosystem is gone, the whole biodiversity is affected.
Yes the earth is changing due to the plate tectonics because when the earth ah earthquakes and all that kind of stuff here comes earth and reshapes it.
