I think it is. I asked you, " How old do scientists think the Earth is?" You said, "5.5 billion years." and I'm afraid you were wrong, Phil. It's 4.5 billion years. OK. Let's recap the vocabulary we've learnt, starting with the idiom my jaw dropped, which is used to say someone looks very shocked and surprised.
A hypothesis is a suggestion that's proposed to explain something, which can then be tested to see if it's true.
Fossils are the remains of prehistoric plants or animals that have been preserved in rock for a very long time.
A tiny fraction of something is a very small amount of it.
The idiom the blink of an eye means a very short period of time.
And finally, a consensus is a general agreement.
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