metallurgy

"The engineers are alloying iron with carbon to make a stronger steel for the bridge. "

"The extraction of the wisdom teeth was a necessary procedure for the student. "

"Environmental studies are becoming increasingly important as we face climate change. "

"My older sister is attending university to study engineering. "

"The extract from the textbook was the most important part for the history test. "

"to refine gold"

"He still has nightmares resulting from the treatment he received from his captors."

"The purification process for the drinking water at the school ensures everyone has clean, safe water to drink. "

"Of course in my opinion Social Studies is more of a science than an art."

"The school's science department focuses on biology and chemistry. "

"The construction crew's working on the new school building is going smoothly. "

"Many everyday objects, like pots, pans, and cars, are made from metals such as steel and aluminum. "