Theres a guy that willl trade you an Abra for a Machop
pancakes
You have to have a badge. Then go to Jubilife City.
You must trade it with a friend, with WIFI-connection in Jublife city(trade building) or transfer it from Pokemon ranger.
log onto the GTS
Yes, in the GTS located in Jubilife City.
you will get it by using zebstrika to trade a lampent with a girl in flamerny city,after you trade it will evolve to chandelure
Petalburg City is not in Pokemon Platinum.
I dont think their is a waterfall in Oreburgh City.
complete the game and then go to either White forest or Black city, depending on your version. Then there is a lab where you can Poke exchange, a one-way trade.
Yes there is. Its to the left of Goldenrod City, pass the Radio Station.
you can only get it from lake verity as your sarter Pokemon or if you didn't get it as your starter Pokemon, you can get it with trade over wi-fi connection in the GTS building in jubilife city or trade it with a friend. hope i helped
Wild Rayquaza can only be found in heartgold/soulsilver. Either catch it in one of those games and trade it to Platinum or get one from the Global Trade station (Jubilife city)