Considering advances in science, discuss with your group what might be a more reliable way to classify organisms. List at least three additional ways besides appearance.

the answer is 1. photosynthesis. glad to

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. weight is the measure of the force of gravity on an objects's mass, while mass is the measure of how much matter there is in an object.