both, well mostly indoor Gymnastics can be indoor or outdoors but the vast majority is indoors for things like beam and mat.
Indoor rock climbing is not a extreme sport. Outdoor rock climbing is
field hockey is an indoor sport and a outdoor sport
It is Both
Rock climbing can be done indoor and outdoors by climbing on rocks.
It is both but is usually played outside unless otherwise specified.
Basketball and Netball are usually played as an indoor sport, however yes they can also be played outside.
soccer can be played in both: outdoor and indoor
Yes gymnastics is a sport. It is included in the summer Olympics.
The opposite is outdoors.