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.
Magma chamber
central vent
crater
I think
It's the point where we are passing it while we're orbiting the sun and it looks like it's moving backwards
Answer: The answer is D) A comparison of physiologic densities and arithmetic densities helps geographers understand
the capacity of land to yield food for the total population
Explanation:
All of the states of the USA are north of the equator.
So are all the states of Mexico.
