oxidizes

"The cut apple oxidized and turned brown after sitting out for a while. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The newspaper exposed the company's illegal dumping of waste. "

"Letters are the elements of written language."

"The farmer used the combine to harvest the wheat quickly. "

"He removed the marbles from the bag."

"Simple sentence: "The light bulb works because electrons flow through the wire, creating electricity." "

"The doctor prescribed a new valence to treat the common cold virus, which was effective against several strains. "

"The increase in homework assignments this week was significant. "

"drops / beads of moisture"

"The positive of finishing the project early is a bonus week of vacation. "

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