Yes unlike humans who change there environment to conform to them turtles change them selves
About a 20 gallon tank.
10 gallon
Depending on the species, one or two. Turtles will keep growing through their entire lives, overcrowding or expecting them to only grow to the size of the tank is something that usually leads to dead turtles.
This is not possible as the required minerals essential for the growth of aquatic life would be absent.
Turtles grow according to their genetic make-up. They will grow until they reach their adult size - regardless of the size of the tank they're kept in !
I think it depends on how big the turtles are.
turtles need to swim, live, everything in water and toads need water but don't live in it. . . . . Also the turtle could possibly eat the toad depending on size hahaha
No.
Tapping on the glass of the tank !
No, a mussel or clam cannot be put in the same tank as a baby turtle. Baby turtles, as well as adult turtles will eat mussels and clams.
Yes they can as long as you follow the rule about 10 gallons per inch of shell for all turtles. For instance= 2 2 inch turtles need 40 gallons not just 20. Make sure the turtles are near the same size and you don't have two males or there will be aggression. Also, if you have a male and a female prepare for them to mate. Also, the tank gets dirtier a lot faster.
The turtles will eat the fish.