Question

Bacteria provides a valuable clue to the origin of life on Earth. Which of these is the most likely process by which bacteria was formed?
A. appearance of new plants
B. adaptation of living things
C. geological transformation of Earth's crust
D. chemical transformation of non-living matter

Answer 1

@GabeBae

Answer 2

Ideas?

Answer 3

For as long as we have known about them, scientists have thought that simple bacteria were the link to the earliest life forms on earth. However, growing evidence suggests we’ve got it all back to front — could the secrets of the origin of life be lurking inside us? When most of us think about evolution, we tend to think in terms of simple organisms evolving into more complex ones. Simple chemical reactions evolved into simple cells, which later evolved into more complex organisms, and so on all the way up to humans. It’s no longer believed that humans are at the top of the evolutionary ladder, but evolution does tend to drive organisms towards greater complexity, does it not?However, this is not always so. Rather, those organisms that leave the most offspring behind, simple or complex, do best. Greater complexity is sometimes a consequence of evolution, but simplification can also be a winning strategy — it all depends on the environment. Nevertheless, most scientists hold that the first organisms on Earth were much like bacteria of today. But several features of the biochemistry of life suggest that bacteria aren’t so ancient after all. In fact, in some respects, the cells of our own bodies tell us more about the evolution of life than bacteria do. The key is in the discovery that won Sidney Altman and Tom Cech the Nobel Prize in Chemistry in 1989.