Hello I am making this quick level in unity3d pro. and for some odd reason when I try to add trees they come out very small…I am very confused on why this is happening. I checked the settings and they are at default so I turned up tree size but nothing happend. I re uploaded the tree assest and basic assets back in and still the same problem occurs… Any suggestions? 
Try increasing the Scale Factor in the FBX import settings for the tree(s).
Ok thank you Il give it a shot.