rebelprincezz5785
18.03.2021 •
Biology
Two species have a six percent difference in DNA. It has been determined that their DNA experiences
changes at a rate of one percent every 40 million years. How long ago did a common ancestor of the two
species live?
O 180 million years ago
O 240 million years ago
O60 million years ago
O 120 million years ago
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Ответ:
The extreme energy released in supernovae actually destroys the nuclei of atoms, causing heavier elements to reform and dispersing them throughout the universe. Before supernovae, the only three elements in the universe were hydrogen, helium, and lithium. More stable elements like carbon and oxygen that are necessary for life were created by them, and without them, we could not exist.