Why did the South lose the Civil War?

The South could not win a war of attrition. The Union had huge advantages in manpower and greater resources as well. I read in The Killer Angels by Michael Shaara that the Confederate Units that made first contact with the Union forces at Gettysburg were in search of shoes that were rumored to be stockpiled there, so the Conferderates could not even keep their army in decent shoes.

because they were outnumbered and poorly equipped.

they hadn't the industrial power that the north had. Also there lines of supplies ( which came from oversee ) where cut by the blockade of north

They surrendered to us at Appomattox.

There are different reasons but the main reason was industrial the sea embargo. Thought the South had very good generals and brave soldiers there where outnumbered to the North. AND the North had most of the industry and raw metals. I've just read a book about the Ironclads of the South and even the building of the Merrimack (or Virginia) took a long time because there was not enough metal at hands. Since the South could not break the blockade of their ports, not enough weaponry could be imported. One by one the ports where taken and the situation became hopeless. A possibility was a interventions by the UK and/or France that needed the cotton. The South has longtime hoped that this would happen but there was the morale issue of the slaves which made a intervention not very popular in Europe.

More Northern soldiers than Southern ones.

Not only did the north have so many more manpower than the South, slaves escaped and joined the North in one way or another. However, the South was very close to winning at one time, but the North pulled through. There was much betrayal during the war on both sides, especially for the South which definitly helped in their demise. The North had an established government and therefore did not have to waste time trying to set up a governing system as did the South. Almost all of the nation's industry was located in the North. This diversified industry allowed the North the ability to mass produce adequate amounts of artillery, rifles, and munitions which permitted the North the ability to fight a protracted, modern war. The South on the other hand lacked any major industrial facilities that could mass produce weapons. The majority of the nation's farms were in the North and the South mostly had tobacco farms that would not exactly keep a soldier alive.

Well its because they were inbred, and did not have the right equipment

They didn't have the resources, money and were short in military personnel. Of course, you know it wasn't a "civil" war. A civil war is when two warring sides are trying to take over the "whole". It was a war about seperation, the south wanted to cecede from the union and the north didn't want the nation split up.