Does anyone know why when I go on here and check my notifications, it says i have messages but when i press chat there's nothing there?

Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide

Sweater originally priced at $65 is on sale for 15% off.you also have a coupon that takes another $10 off.what percent of the original price do you pay?

Mason ran 2/3 mile in 1/3 hours. what was nasons unit rate?