You can but with my experience it will lower your pH,my pH was at 7.8 then i add sand it drops to 7.
You CAN put one in a pond, but it will slowly sink.
No. I don't think so.
You could put materials like sand and rocks in a diorama for a kangaroo. You might also add water for the kangaroo (make a small pond from tin foil) and some desert plants.
both are the same ther 1 pond
On ground near a pond
Put pond water in a cooler with fish in it. Then bring it to the other pond and put small amounts of the new water into the cooler so it slowly adjusts to the environment. After about 20 or 30 minutes of doing this, take the fish out of the cooler and put them into their new home.
snails
No
No
The general term would be hazards. Sand is a bunker, and the water may be lake, pond or river etc.
The nonliving things like; water, air, sunlight, rocks, and sand.
Pleco's are tropical fish, so if your pond has a sub-tropical temperature, the pleco will not survive in the pond for very long.