Answer:
150 million years old
Explanation:
If we have an isotope that has a half-life of 50 million years, we need just need to divide the numbers in order to get to one eight of the full number, than multiply it by 50 million in order to get the result.
If one half is 50 million years, than dividing one more half, which will gives one fourth of the total, will brings us to 100 million. Dividing the one fourth by two will leads to the one eight of the full number, and adding 50 million more years, we get 150 million years. So the rock in question has 150 million years of age.
High density of people in Hong Kong, New york City, all big citys in India like Delhi or calcuta
There are a couple of answers to this:
A: A lot of people back then were heavily Catholic, the Catholic church claimed that the Earth was flat, while others believed the Earth was round.
B: Back then, obviously they didn't have airplanes or satellites, thus people believed the Earth was flat. The reasoning of this is because, if you were to look outside right now, the Earth does look like it could be flat. (that is because you have to be at a certain level of elevation to see the curvature of the Earth). Eventually though, people started reasoning and came to the conclusion the Earth was round. (They were proven right when aerospace technology came around.)
Answer:
yes,
Explanation:
because people need enough water for them to live and also water is used by many uses like washing
Answer:
Near Modern-Day Pakistan.
Explanation:
Most scholars believe Hinduism started somewhere between 2300 B.C. and 1500 B.C. in the Indus Valley, near modern-day Pakistan. But many Hindus argue that their faith is timeless and has always existed. Unlike other religions, Hinduism has no one founder but is instead a fusion of various beliefs.
