creatine

"The liftoff will occur in exactly twelve seconds."

"Although he was unused to the situation, he tried to act naturally."

"The strong, acetic smell of vinegar filled the kitchen as Mom made salad dressing. "

"supply and demand"

"The school's track and field team has many dedicated athletes. "

"Simple Example: "Humans, dogs, and fish are all examples of vertebrates because they have a backbone." "

"Muscle consists largely of actin and myosin filaments."

"The children's energy fueled their excitement for the school trip. "

"The chemist identified a methyl group attached to the larger molecule, confirming its identity. "

"Buying more servers would improve performance."

""Because she wasn't getting enough vitamins from her diet, the doctor recommended she take daily supplements." "

"the performance of an undertaking or a duty"