Well the trees are the fuel for a fire and the sun can start a wild fire so I would probably say the things on the ground but I’m not completely sure
After reviewing the graph you posted above, there is one radioactive isotope that has a half life that is approximate to the same as the estimated time of the origin of Earth.
The radioactive isotope is called Uranium 238. You can also write this out as U-238 or uranium/u. Any of these are acceptable for the answer.
Where are "the following" answer choices?
