In pure water, a red blood cell from
an animal will swell and burst, but a
leaf cell from a plant will not. which
structure in the leaf cell is responsible
for this difference?

a: the sheep and waste material both release carbon into the atmosphere.

chordata is the answer

amber has allowed scientists to study dna that has been preserved over millions of years.

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.