FTP, SSH, Httpd Status Is Running. But Why Can't Access The Site

I can access FTP, SSH and httpd is showed as running when i check with 'httpd status'. Memory ram has half of them left(except that swap is 0,0).

I can't access my site via browser

Why tried restarting
[root@web2 ~]# service httpd start
Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:80
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs
[FAILED]
[root@web2 ~]#