the density of an object refers to its mass per unit volume. the density of an object is determined by its mass, its size and arrangement of its atom. the mathematical formula for density is given by: density = mass / volume. the density of a substance is part of the determinant of what the substance can be used for. the density of an object depends on how tightly its molecules are packed. a substance with loosely packed molecules will have low density while a substance with tightly packed particles will have high density.
a material with 0.2g/ml density have low density, thus, such an object will not be suitable for holding large weight. therefore it will be suitable for making couch cushion.
for example, density of steel is 7.85 g / cm³.
density of pure water is 1.0 g/cm³. an object which has a density < 1.0 g/cm³ will float in water.
answer: material that has a density of 0.2 g/ml ( 0.2 g/cm³ ) is good for making couch cushions.
the correct answer is option d, that is low growing.
silene acualis (moss campion) refers to a small mountain wildflower, which thrives at the high arctic and tundra region, and in the higher mountains of north america and eurasia. moss campion is a low, ground-hugging plant. the tundra plants like moss campion exhibit unique adaptations to survive in the extreme conditions. these plants are small with small leaves, and with buds inserted within the foliage for supreme protection.