Answer:
its C
Explanation:
i do AP bio so this is something learned a long time ago also im a straight A student so yeah
Nucleotide!
When attached in a polymer, they become a nucleic acid.
Answer:
i think it's the double helix
Explanation:
The planetary body that Spirit was designed to explore the wide ranges of soil and rocks for clues of the water activity on Mars. Spirit specifically landed at the Gusev Crater which was before, a possible lake in a giant crater.