When sugar is heated on a hot plate, it turns into a liquid. When the liquid sugar is cooled, a hard-crystalline substance is formed. This model BEST demonstrates the
formation of

photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy.

the answer to this question is 3.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3