yes it gives it an extra 90 power
TM 27 is Return.
It can be bought in the Goldenrod Department Store.
In Pokemon Emerald - TM Return is extremely easy to get (If you've completed the main story). There are two TMs for Return. You can get one of them if you go to Pacifidlog Town by talking to the Pokemon Fan Club Master's brother - or you can retrieve the Meteorite (Key Item) from Mt. Chimney. After taking the Meteorite, travel to Fallarbor Town, and give it to the scientist. He will give you TM Return in exchange for the Meteorite. Hope this helps!
No. All TMs and HMs do is teach your Pokemon a move.
TM27 Return can be found on the fourth floor of the Lost Tower - South of Solaceon Town. It can also be purchased from the Veilstone Game Corner for 8,000 Gold Coins. You could also Get Return off a migrated Pokemon if you make it hold the TM in the other game beforehand.
You can't revive it; you can only give it to the professor and he'll give you the TM return for it.
If you go south of lavendar town then enter the big building go upstairs then talk to the girl she will give you the TM Return.
you go to fallabor then you trade it with DR.COZMO for the tm 27 that contains return.
the first tm you can get in pokemon pearl is the move return and the more friendly the pokemon is to you the more powerful it will become also it could be used on any pokemon but choose carefully because it can only be used once
Strength is not a TM. To obtain Strength you need to find the Teeth in the Safari Zone and return them to the Warden he will give you Strength as a reward. (I would also pick Surf up whilst your in proximity to the teeth)
Go to pacifidilog town and search all the houses.You will find an old man who will give you the TM return or frustration every week. If the Pokemon who is first in your party loves you a lot, the man will give you return. If the Pokemon hates you or doesn't like you, he will give you frustration. he will give you one of thes weekly. Once taken, wait for one week. To get more, repeat the above mentioned process.
to do this type (TM) In words open bracket TM closed bracket (TM)