arpanpatnaik wrote:
I guess the trick is to understand the difference between 'estimated at' and 'estimated to be'. Since at is a preposition, it should be followed by a noun,
I don't think this is true. In the following official question, the correct answer says "dated AT 34 million years old".
fossils-of-the-arm-of-a-sloth-found-in-puerto-rico-in-80744.html
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