which of the following is a benefit of the atmosphere?

the atmosphere provides us with water to drink.
the atmosphere provides the soil with nutrients.
the atmosphere provides warmth.
the atmosphere provides food.

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.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.