by dehydration synthesis
Cells build carbohydrate polymers by using energy to form glycosidic linkages, the bonds between monosaccharides. A dehydration synthesis reaction forms a bond between carbon atoms in two monosaccharides, sandwiching an oxygen atom between them and releasing a water molecule.
Nucleic Acids are made up of repeating units called Nucleotides
Your answer would be... B. The climate on Earth has changed over time.
Plants are separated into C) 3 categories.