<span>There are two major theories that will explain on research on colour vision. They are 1. the trichromatic theory also known as the Young-Helmholtz theory 2. opponent-process theory. These two theories explain processes that operate at different levels of the visual system.</span>
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Which substance is a nucleus acid?
Well here’s your answer:
Nucleic acids, which include DNA
(deoxyribonucleic acid) and RNA (ribonucleic acid), are made from monomers known as nucleotides. Each nucleotide has three components: a 5-carbon sugar, a. If the sugar is deoxyribose, the polymer is DNA.
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D. The pathogen had been weakened