Final answer:
RNA differs from DNA in terms of structure and composition. It is single-stranded, contains ribose sugar, and uses uracil as a base instead of thymine.
Step-by-step explanation:
RNA differs from DNA in several ways. One key difference is that RNA is single-stranded while DNA is double-stranded. Additionally, RNA contains the sugar ribose instead of deoxyribose found in DNA. Finally, RNA uses the base uracil (U) instead of thymine (T) found in DNA.