In Mission Control, at the top of your desktop it shows your Dashboard, desktop spaces, and your full-screen apps. At the bottom or middle of your screen, it shows an Exposé view of the open windows. Exposé groups window not the same application. So if you have tabs from different windows from safari, it will group those items together to make it easier for yourself.
The spaces on your Mission control depend on the user. You can also add and remove desktop spaces from Mission Control itself to add a new space, click the new Spaces control (+) in the upper-right corner of Mission Control. To remove a space, click the delete button (x) on the space’s thumbnail. You can also bind an application to a space to make it ready for spaces right from the Dock. You can do this by pressing and holding the icon in the Dock and make a selection from the contextual menu. Leave a comment below and we will answer it as soon as possible.