Why multple process runs when (./httpd -k start) command is being run?

Read This one:
http://httpd.apache.org/docs/2.2/mod/prefork.html
This is all about configuration.We can also decide that how many process should be run. The following file can be configured related to this.
.../ache2.2.8/conf/extra/httpd-mpm.conf

Apache HTTP Server as a 'Load Balancer '

Introduction
The Apache HTTP Server, commonly referred to simply as Apache, is a web server which provides load-balancing, caching static contents and failover support to backend servers among other features.

Get Apache setup
http://www.apache.org/dist/httpd/binaries/win32/#crypto

Apache Forum
These ids can be used to subscribe your messages on apache forum.
users@httpd.apache.org;
users-faq@httpd.apache.org;
users-help@httpd.apache.org;
users-request@httpd.apache.org;
users-subscribe@httpd.apache.org

Apache as a loadbalcer with tomcat as backend http://www.theserverside.com/tt/knowledgecenter/knowledgecenter.tss?l=LoadBalancingTomcatApache