The basic repeating unit of nucleic acids are known as nucleotides. A nucleotide consists of three distinct chemical groups, a 5-carbon sugar (ribose or deoxyribose), a nitrogen-rich base - (cytosine (C), guanine (G), adenine (A), thymine (T) in DNA or uracil (U) instead of T (in RNA), and phosphate.
Resident Also called normal or indigenous biota
First, the existence of an indigenous—or residential—microbiota is ancient. Such microbes are found in all animals which can be at the least as complicated as annelids (earthworms); this gives proof for the co-evolution of animals and micro organism for more than 800 million years (Schramm et al, 2003; Savage, 1977).
The indigenous microflora stimulates the host immune system to respond extra speedy to pathogen challenge and, through bacterial antagonism, inhibits colonization of the GI tract with the aid of overt exogenous pathogens.
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Answer:
B. Wind
Explanation:
The rise and fall of the tides, Winds drive currents that are at or near the ocean's surface.