Why is it important to keep your back and neck straight while performing a hamstring stretch?

Which two levels of the spine that can undergo flexion and extension?

Justify the following statement: “diversity should exist in the workplace.”

What is the function of reverse transcriptase in retroviruses? a) it uses viral rna as a template for dna synthesis.b) it converts host cell rna into viral dna.c) it translates viral rna into proteins.d) it uses viral rna as a template for making complementary rna strands.