Which of the following is not part of the biosphere?
a. lithosphere
b. solid earth
hat type of symbiotic relationship would a fox and a ra
a. mutualism

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.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

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