Substance abuse can spread STIs because when a user shares needles with an infected person, it can spread through the blood. Any high-risk behavior like this spreads STIs.
the lithosphere is inbetween
Building a polypeptide: Polymers are chains of subunits, monomers, linked together by chemical bonds. The bond between two amino acids is known as a peptide bond<span>. Two amino acids, joined together by a </span>peptide bond<span>, are known as a </span>dipeptide<span>. An amino acid polymer is known as a polypeptide.</span>
Answer:
Mars
Explanation:
The Deep Freeze: Ice on Mars. Like Earth, Mars has ice caps at its poles. Water reaches the poles as vapor and is frozen into thin layers that build up thick deposits. Mixed with this water is dust picked up by the wind, so the caps have bright and dark layers of "clean" and "dirty" ice.
