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WHERE DOES THE ENERGY COME FROM?
next big leap came 1.8 billion years ago, when larger, more complex cells appeared. These so-called eukaryotic cells contain the DNA within a central structure, the nucleus. There are also a number of other specialist structures with particular functions. These are called organelles. The fact that some of them have their own
If you retune your radio, part of the ‘white noise’ you hear between stations is this very same echo from the beginning of time.
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