Darwin proposed an idea that all species change over time because those that are best adapted to their environments are able to survive and pass on their traits to their offspring. This became known as Darwin's theory of evolution. This historic insight was described based on his observations of the inhabitants of the Galapagos Islands.
yes uhhhh ya what do u mean oh really i thought sooo ok then goodbye. At least i answerd.
To have an overall positive or negative charge. (as opposed to neutral one)
Correct answer - A.
Why? - A nucleotide consists of a sugar molecule (deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).