Explanation:
The purines are ribose and deoxyribose
Answer:
When replication mistakes are not corrected, they may result in mutations, which sometimes can have serious consequences. Point mutations, one base substituted for another, can be silent (no effect) or may have effects ranging from mild to severe.
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That would be coal because you can cook with coal, build things out of coal, and use it for energy
Answer:
An intrauterine device, also known as intrauterine contraceptive device or coil, is a small, often T-shaped birth control device that is inserted into the uterus to prevent pregnancy. IUDs are one form of long-acting reversible birth control.
Carbon dioxide is used to build sugars. I think it's the only one
