biphenyls

"Gasoline is a hydrocarbon fuel used in many cars. "

"Over the years, their industry and business sense made them wealthy."

"Although it was very muddy, the football game went on."

"The water from the well was surprisingly colourless, almost like air. "

"The noisy environment of the school cafeteria made it difficult to concentrate on my homework. "

"The project consists of three main parts. "

"To make it safer for use in the classroom, the lab technician halogenated the organic solvent, making it less flammable. "

"I had no shallots so I substituted onion."

"The teacher's lesson plan was together, covering all the key concepts logically. "

"He said he didn’t do it, but the evidence was otherwise."

"Even from a young age it was clear that she had the potential to become a great musician."

"Her persistence in studying every day helped her pass the difficult exam. "