They are all in common because they are from nature and they are resources.
Because they are heavier than water and have no air in them
The water stays in the glass when covered with paper and inverted due to air pressure. The air pressure pushing up on the paper is greater than the force of gravity trying to pull the water out, creating a seal that prevents the water from falling out.
air occupies space
No, it isn't. A natural resource has to be found from the earth, water or air. Paper is not "found", it is made by humans.
Paper floats because it is less dense than water. The air trapped within the paper's fibers makes it buoyant, causing it to float on the surface of the water rather than sink.
They all have oxygen in them.
Water proof paper has a layer of Waterproofing material such as silicone polymers which are water repellents as the water comes in touch with the paper it flows from it like water sprayed on non porous surfaces. Application of wax is another common procedure, Waxing seals the pores in the surface of paper so it doesn't absorb water.
If it is in water it will start to become the same temprature as the water. But if it is on paper towel the air aroud itwill melt the ice cube.
They have air, water, people, and land.
Yes, paper will float in water because it is less dense than water, causing it to be buoyant. The air trapped within the paper fibers adds to its buoyancy, allowing it to stay afloat on the water's surface.
Water and air are both fluids. The particles that make them up can 'flow' and move around from place to place
Paper is less dense than water, which allows it to float on the surface. The air trapped within the fibers of the paper also adds buoyancy, helping it stay afloat.