The tea bag floats in the cup because the air trapped inside the tea leaves makes it less dense than the water, causing it to float instead of sinking to the bottom.
not iron
Fish do not normally "float around" they swim. If your fish is floating/sinking then it is probably dead.
it makes bubbles in water which has enough energy to make it float
Leaves float on top of ponds because they have a lower density than water, which allows them to be buoyant. The air pockets in leaves also contribute to their ability to float. This allows leaves to stay on the surface of the water rather than sinking.
yes
Eggs float in water because they have an air cell inside the shell, which makes them less dense than water. This causes them to float instead of sinking.
if it starts to go to the bottom that means its sinking and if it stays on the top that means its floating in the water
pressure is put on a glacier and causes a chunk of ice to float of on its own. This is a iceberg.
can float
A specific gravity less than 1 allows a chemical to float in water. This means the chemical is less dense than water and so it will float on the water's surface instead of sinking.
well it kind of hard to explain since they are sea animals they can swim for there life but if they die they will float.