Pre-advanced English vocabulary - 10 words

Which word means "no longer in existence"?

Which word means "easy to hurt or attack" or "exposed to danger"?

Which word means "something that exists between two things and keeps them separate"?

Which word means "the height above sea level"?

Which words means "the state of being crowded and full of traffic"?

Which word means "being the only one of its kind"?

Which word means "real" or "genuine"?

Which word means "needing or wanting something very much"?

Which word means "previous" or "happening or existing in the past, but not now"?

Which word means "the unfair treatment of someone because of their sex, race, religion, etc."?