pyrrole

"The building of the bridge will be completed in a couple of weeks."

"It is very important to give your daughter independence in her life so she learns from experience."

"My sister is very helpful, especially when it comes to organizing things. "

"The simplest way to solve the math problem was to use the formula directly. "

"The box containing my old toys was stored in the attic. "

"The pharmaceutical company is researching a new drug that contains a specific heterocycle known for its potential anti-inflammatory properties. "

"The school's science fair featured several different biological specimens. "

"Grandma used a generous amount of aromatic in her famous spaghetti sauce. "

"To explain a chapter of the Bible."

"Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom and a chlorine atom."

"The air we breathe is mostly nitrogen. "

""During the war, the refugees lived in guarded compounds for their safety." "