This tunneling phenomenon at very low temperatures suggested my hypothesis about a cold prehistory of life: formation of rather complex organic molecules in the deep cold of outer space, where temperatures usually reach only a few degrees Kelvin. Cosmic rays might trigger the synthesis of simple molecules, such as interstellar formaldehyde, in dark clouds of interstellar dust. Afterward complex organic molecules would be formed, slowly but surely, by means of tunneling. After I offered my hupothesis, Hoyle and Wickramashinghe argued that molecules of interstellar formaldehyde have indeed evolved into stable polysaccharides such as cellulose and starch. Their conclusions, although strongly disputed, have generated excitement among investigators such as myself who are proposing that the galactic clouds are the places where the prebiological evolution of compounds necessary to life occurred.
1. The author is mainly concerned with
[A]. describing how the principles of classical chemistry were developed.
[B]. initiating a debate about the kinds of chemical reaction required for the development of life.
[C]. explaining how current research in chemistry may be related to broader biological concerns.
[D]. clarifying inherent ambiguities in the laws of classical chemistry.
2. In which of the following ways are the mentioned chemical reactions and tunneling reactions alike?
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