Based on the clue 'a 10 cent small green citrus fruit', what is the answer?

Based on the clue 'a 1 humped cow milking lady', what is the answer? Based on the clue 'a 1 on the mercalli scale or below a 3 on the rich...', what is the answer? Based on the clue 'a 1 ounce first class letter costs this much to ma...', what is the answer? What is associated with: a 1 pound tin of premium sevruga this can go for more than 2000? What is referred to by 'a 10 dollar bill'? Based on the clue 'a 10 letter word for a crotchety old miser not a c...', what is the answer? Based on the clue 'a 10 man 22 ton infantry fighting vehicle named fo...', what is the answer? What is associated with: a 10 square mile area covers 6400 of these?