Answer:
One of the best-preserved records of these events is in the bottom of the Grand Canyon—in a package of sedimentary strata known as the Tonto Group.
Explanation:
I think the answer is "physical"
hope this helps ! :D
Referring to a particular type of population in a country or area, you are referring to all the people or animals of that type there.
a lot of people have the misconception the nuclear energy is bad for the environment when in reality, it's one of the healthiest formats of energy for the planet; when adequately maintained, people should get more educated on the subject.
