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<h3><u>Answer and Explanation</u>;</h3>
- Purines: Heterocyclic rings are synthesized one atom at a time, first atom attached to ribose phosphate (source is PRPP) and then all the other atoms are added .
- Pyrimidines: Common intermediate, orotate, synthesized first, then orotate is attached to ribose phosphate (source is PRPP or 5-Phosphoribosyl-1-pyrophosphate).
Answer:
Mid-Atlantic Ridge
Explanation:
This is because they are deep down, near the earth's crust .
Answer:
Pedagogy, andragogy, and gerogogy are three different ori- entations to learning in childhood, young and middle adulthood, and older adulthood, respec- tively.
Explanation:
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Answer: A
Explanation: Ripple marks are sedimentary structures and indicate agitation by water (current or waves) or wind.
