What is one definition of a base?

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

How have the greenhouse gasses increased from the year 2000 to 2018