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The Earth's plants take up about 12,000 billion kg of water per year (we know that roughly from the CO2 they take up). The total water on Earth is about 1400 billion billion kg. So within about 100 million years most of the water will have been chemically destroyed. Dinosaurs lived 65 million years ago. So, SOME of the water we drink is the ...
The total water on Earth is about 1400 billion billion kg. So within about 100 million years most of the water will have been chemically destroyed. Dinosaurs lived 65 million years ago. So, SOME of the water we drink is the same water, but more than half is different water. Expand All Transcripts.
It was a life-altering event. Around 66 million years ago, at the end of the Cretaceous period, an asteroid struck the Earth, triggering a mass extinction that killed off the dinosaurs and some 75% of all species. Somehow mammals survived, thrived, and became dominant across the planet. Now we have new clues about how that happened.
Answer. Chris: In that sort of timeframe, I reckon the answer is [Earth's water has remained] roughly the same. It does increase by a small amount - I think the stated geological figure is about 1 inch every 20,000 years or so - but that's extrapolated over the lifetime of the Earth. Most of the water we have came in the form of comets and ...
Thanks for all this fantastic Information. I can go and do my show at Hampshire water festival tomorrow and safely say that some of the Earth's water today was around when Dinosaurs roamed the planet. Kids love this fact and I would have hated it to be a myth. The show is called Wacky Water and is full of wet facts.
Chris - New water being made all the time. First of all, where did all the water on Earth come from in the first place? Because the Earth is about 4.5 billion years old, the stuff that it was made from which was a ring of dust and gas which was forming around the early sun, we've got models of that environment and there's probably not very much ...
Play Download. About 65 million years ago, an asteroid slammed into Earth in a cataclysmic impact that, among other things, wiped out the dinosaurs. But incredibly, scientists now know at what time of year this happened. PhD student Melanie During, from Uppsala University in Sweden, has found tiny balls of congealed glass made by the impact ...
One of them is a nice, kind of compact animal like a glass of water for example. The other one is a really kind of spread-out animal. So, I'm going to pour the water into a tray. So, it's only about half centimetre deep. Kate - So, this water in the tray is like the blood going through the dimetrodon's sail I suppose.
Sarah - Hilary Ketchum from the University of Cambridge. By the start of the Mesozoic, around 250 million years ago, reptiles were already diversifying on land - it's known as the 'Age of Reptiles', and includes the Triassic, Jurassic and Cretaceous periods, when the dinosaurs ruled the land. So what drove so many reptile groups back into the ...
Before the dinosaurs even existed, there was a time when the planet was teaming with strange creatures in both the sea and on land until disaster struck and nearly, all of life died. Paul Wignall from the University of Leeds joins us to tell us about the biggest mass extinction in the history of life on Earth.