Cutting down only some trees ina a forest, leaving a mix of tree sizes and species standing, is called A. Selective cutting
B. Clear cutting
C. Certified cutting
D. Patch cutting

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.

answer; blending inheritnace;