Which of the following statements is correct in regards to density? pressure is directly proportional to density. pressure is inversely proportional to density. temperature is directly proportional to density. temperature and pressure do not affect density.

Density is defined as the ratio of mass to the amount of matter i.e. volume.

The mathematical expression is given as:

Now, from the mathematical expression, density is inversely proportional to volume and directly proportional to mass implies with decrease in volume, density is also decreases and with increase in mass, density is also increases.

Low volume (compression) is due to high pressure, results in increase in density and high temperature results large volume (expansion) implies temperature is inversely proportional to density.

Thus, pressure is directly related to density implies increase in pressure results in increase in density.

Hence, first option is the correct answer.

water   molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation:

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