If you affect something, you cause a change in it. "The heavy rain affected our schedule." If you effect something, you cause it to happen. "The lobbying by the special interest group effected a change in the proposed legislation."

Affect = verb. "Your physical appearance can affect what people think of you." Effect = noun. "Your physical appearance has an effect on how people think of you." Hope this helps :)

http://www.thefreedictionary.com/affect http://www.thefreedictionary.com/effect It's very easy to find the answer by searching. If you still have some confusion, by all means ask. :)