Ablank is a pure substance that can’t be broken down into simpler substance by chemical or physical means.

element

An element is a pure substance that cannot be separated into simpler substances by chemical or physical means.

the answer is a . the absence of love

b. cronkite, a trusted television personality, declared that the war was unwinnable and told the american people that the government had better find a way out

even though it went against everything the news anchors typically stood for, cronkite voiced an opinion and took a stance, telling the us that there was no way they were going to win, the war was going to end in a stalemate.