Helped to confirm that environmental changes cannot affect the characteristics of a species.
Answer:
Secondary structure proteins folding
Explanation:
Alpha helix and pleated sheets are basically two types if secondary structure of Proteins.
<span>Bilbo has really become an expert burglar by this point and he has claimed for ... Thorin does not become a villain but his character degenerates into greed ... various groups advance towards the mountain‹for there is treasure to be had. ... the effect of dramatic irony, for we know precisely what will happen.</span>
A substance that speeds up the rate of a chemical reaction is called a Catalyst.