What is the correct description of the relationship between osmosis and diffusion?
a)
diffusion is a type of osmosis that occurs across a cell membrane.
b)
osmosis is a type of diffusion that occurs across a cell membrane.
c)
osmosis is a type of diffusion that requires energy on the part of the cell, whereas diffusion happens freely.
d)
osmosis is not directly related to diffusion. osmosis involves the movement of liquids. diffusion involves movement of gases.

The correct answer is option B

Diffusion can be defined as the movement of material( particles )from an area of its higher concentration gradient to an area of its lower concentration gradient.

Osmosis can be defined as the movement of solute particles from a region of its higher concentration to lower concentration across a membrane which is semipermeable.

It can be said from the definition osmosis is a kind of diffusion across semipermeable membrane.

B

Explanation: Osmosis is a type of diffusion that occurs across a cell membrane. Osmosis is the diffusion of water across a cell membrane, excluding large solutes.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.