a solid is more dense than a gas
solids is denser_than_gasses_at_atmospheric_pressures. gas is not generally. gas is gas. gas is fluid. solid_animal_matter is not organic_matter. gas is generally. three_forms_of_matter is not solid_liquid_and_gas. solids is not denser_than_gasses_at_atmospheric_pressures. three_forms_of_matter is solid_liquid_and_gas.