mercuric

"The thermometer showed the room temperature was 25 degrees Celsius. "

"The contamination of the water supply caused many people to get sick. "

"The documents pertaining to my car insurance claim are now all submitted. "

"The oxidation of iron causes rust to form on metal objects. "

"The president has a unique personality."

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

"The box contained old photographs. "

"The computer technician fixed the broken printer in the school library. "

"My son consistently gets good grades in math class. "

"My teacher explained the new math formula specifically for students in the advanced class. "

"The school's new policy focuses on environmental sustainability. "

"Railway crossings without gates are highly dangerous."