If one substance floats in another it must be dense

True
Or
False

true

Explanation:

Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume.

well we can't tell you because we cant see the time give a screen shot or something.

      n