Answer:
Ohio has had many different geologic periods ranging from the Precambrian Period to the Permian Period. In the 245 million years following the Permian Period rocks were formed in what is now Ohio but were erased by natural forces, this is called the geologic gap. Around a million years ago the Ice Age caused glaciers to move across Ohio which covered around 2/3 of the state, which scraped much of Ohio's surface. After all the glaciers melted around 10,000 years ago the Earth entered the recent period of geologic history. Now new igneous rocks are being formed.
Fundamental principle is the answer to the question
The answer is b. coal mines. Humans made the mines, not nature.
I think D because in theeeee Northern Hemisphere weeeee get more darkness then weeeeee dooooooooo Daylight in February. It’s Winter innnn the Northern Hemisphere(Tropic of Capricorn) and it’s Summer innnnn the Southern Hemisphere(Tropic of Cancer)
