Take PRO and add the word described by the first clue to get the word described by the second clue. The answer will be the longer word.
-1.PRO + Heal = Obtain
-2.PRO + Hollow tube or pipe = Outcome
-3.PRO + Sight = Stock of supplies
-4.PRO + Speck = To elevate
-5.PRO + To join together = Excessive
-6.PRO + Located = With great understanding
7.PRO + Tardy = Spheroidal shape
-8.PRO + Farming equipment = Instrument for measuring angles
-9.PRO + Lessen in intensity = Establish the legal validity of a will
-10.PRO + Unit of weight = Subatomic particle with positive charge