On land it could be more dry. That may be a smart-alec reply, but I guess it's right. The length of a meter is always one meter.
A decimeter is 1/10 of a meter
On land most likely.
1 decimeter = 10^-1 meter.
No
The Bioluminescent Mushroom lives underwater.
Land Volcanoes eat lamas and underwater volcanoes eat camals
Underwater Photography Guide is a great place to compare different underwater cameras. Their website provides articles and reviews on a number of different underwater cameras.
desert
amphibious
Frogs live both underwater and above (on land). They are amphibians.
Mountains and hills underwater can be bigger than the mountains and hills on land.
Have a war to be started