<span>Purines and pyrimidines form hydrogen bonds between each other. Certain polar chemical groups form electrostatic interactions or hydrogen bonds. The A-T and C-G pairings form the hydrogen bonds between the amine and carbonyl groups on the complementary bases.</span>
Answer:
The pharynx, commonly called the throat, is a muscular, funnel-shaped passageway inside the body. It connects the mouth and nose to the esophagus (leading to the stomach) and larynx (leading to the trachea and then lungs).
Explanation:
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Formal I believe. I'm not exactly sure. but Google always works too
Traditional practices
dances and music
gestures
clothing
An HMO requires a referral from the primary care physician before they will cover a visit to a specialist. A podiatrist is considered a specialist.