Yes
Yes, bleach will kill the bacteria in your aquarium, but it will also kill everything else in the tank.
Absolutely not unless you have an aquarium and bacteria and other things for it to feed on, besides that's a lot of $ to buy an aquarium.
I can see that we're going to need a bigger aquarium.
No, but gravel can help decorate and brighten an aquarium.
There should and probably will be bacteria on EVERY hard surface in the tank such as the Decorations, Substrate and Glass. Also there is bacteria in the Filter as it breaks down the toxic bacteria in the water. these bacteria remove toxins for fish that can kill them ammonia, nitrite and nitrate
yeah just clean it well before with some diluted bleach and let it dry out. lizards have bacteria on their skin that can harm the fish
No!?.
yes they need an aquarium with a section for feeding, a section for swimming, and a section for basking. 75 - 125 gal. reccomended
An aquarium filter is a device that either submerges, hangs on the back of or sits underneath the stand of the aquarium. It processes the aquarium water to collect debris and harmful chemicals and bacteria while returning the water to the tank more cleaned.
The some need of the animals in the aquarium that plants can provide is oxygen.
Many things including good bacteria, oxygen, CO2, shelter, aesthetic improvement and much more. A plant in an aquarium environment does what a tree does in its land based environment.