How do we know dinosaurs had to have drunk the same water that we do??

Question

I need an answer as soon as possible!!

Answer 1

No matter what form water is in....ice, vapor, or liquid, it is still the same. The water that was on Earth that long ago didn't leave the planet, did it? Of course not. The atmosphere holds it in. There is a certain amount of water that has always been on Earth. It just keeps recycling itself.

Answer 2

Well all freshwater starts out the same.  However, dinosaurs did not drink the same water as we do.  We humans drink treated water.  Did you forget that?  The water that comes out of your faucet has been treated with chemicals, therefore not true freshwater.  Indeed most people can not drink water out of a lake or stream.  I am sure the dinosaurs could.

Answer 3

There is a limited (finite) amount of water on this planet.  No water is being created, and none is being destroyed.  So what there is of it NECESSARILY gets used over and over again.  

It's just that simple.

Answer 4

well most of these people have been correct so far to a point.  What we are talking about is that water has been on this planet for a long time much of it has been recycled a small amount has been broken town back to oxygen and hydrogen and a small amount is reformed back, but the majority is a billion years or recycling. Good thing the process works so well.  Also for that person who says most people cant drink fresh water from streams.  They are thinking only north Americans and Euroes who make up less then 25% of the human population.  Also if you get above the main pollution line and drink from a rocky stream you will be fine.  Have done it many times you just need to make good choices.

Answer 5

Hill is quite right. We know from the whole of astronomy and cosmology that the laws of nature have been the same for billions of years, and in addition we know from the textures and chemical composition of rocks that the laws of chemistry on earth have been the same for over 4 billion years.

So the dinosaurs were bound by the same laws of physics and chemistry as you and me, and drank the same kind of water.

Answer 6

the water cycles..

the same water molecules that fall from rain couldve been the same water molecules that fell from rain on them

Answer 7

Because we know that earths surface water supply

just keeps recycling.

Same old water gets reused.

To satisfy the 'yuck' factor, we also drink the same

water that the dinosaurs excreted.