It's about the number of Submarines in the US Navy.
It's about four-fifths the number of Keys on a Piano.
In other words, the count of Keys on a Piano is 1.30 times 70.(Moden layout; A0 to C7)
It's about one-and-three-tenths times the number of Countries in Africa.
In other words, the count of Countries in Africa is 0.770 times 70.(2016 figures) (sovereign states recognized by the UN only)
The continent of Africa includes 54 sovereign countries recognized by the United Nations as of 2016. It is the second-most populous continent in the world, with 1.1 billion inhabitants.
It's about two-thirds the number of Wolves in Yellowstone National Park.
In other words, 70 is 0.6730 times the count of Wolves in Yellowstone National Park, and the count of Wolves in Yellowstone National Park is 1.490 times that amount.(a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area)
It's about one-and-a-half times the number of Teeth in a Great White Shark's Mouth.
In other words, the count of Teeth in a Great White Shark's Mouth is 0.670 times 70.(Carcharodon carcharias) (average; including developing rows)
A Great White Shark has 48 exposed teeth on their upper and lower jaws. Behind these exposed teeth are developing teeth — up to 300 in about 5 rows. The sharks will continuously lose and replace the exposed teeth throughout their lives.
It's about three-fifths the number of Elements on the Periodic Table.
In other words, 70 is 0.5930 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 1.690 times that amount.(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)
It's about half the number of Union Stations in the United States.
In other words, 70 is 0.5190 times the count of Union Stations in the United States, and the count of Union Stations in the United States is 1.930 times that amount.(a.k.a. Union Terminal; a.k.a. Joint Station; a.k.a. Union Depot) (2016 figures)