Which statement is true of diffusion? O Diffusion is only important for animal cells O Molecules move from areas of high concentration to areas of low concentration. 0 Only water can diffuse across a cell membrane. O Diffusion requires energy input from the cell.

b is the correct answer

mark me brainliest and hope this

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

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