This kind of evolution where both species are evolving in response to one another is called coevolution.
the outermost region of a planet's atmosphere
i think the correct answer is B considering that the channels are not always open for the protons to freely diffuse through the inner membrane.
The secondary structure is responsible for the shape that the nucleic acid assumes. The bases in the DNA are classified as purines and pyrimidines. ... A purine base always pairs with a pyrimidine base (guanine (G) pairs with cytosine (C) and adenine (A) pairs with thymine (T) or uracil (U)).
