<span>Ribonucleic acid (RNA) occurs
primarily as single strands, often giving rise to single polynucleotide
structures. RNA is a polymeric molecule
that is responsible for the regulation, coding, decoding and expression of
genes. Each nucleotide has a ribose sugar attached to the carbon, a base that
is composed of purines and pyrimidines, a negatively charge phosphate groups
and a hydroxyl group which causes helix to mostly adopt the A-form geometry.</span>
Answer:
B) A difference in pressure across a distance.
Who is more likely to die from heart disease in the US?
Adults age 65 and older are more likely than younger people to suffer from cardiovascular disease, which is problems with the heart, blood vessels, or both.
Bryophytes also need a moist environment<span> to reproduce. Their flagellated sperm</span>must<span> swim through water to reach the egg. So mosses and liverworts are restricted to </span>moist<span> habitats.</span>
