QUESTION 5 Diffusion involves the movement of particles from a region of
А,
low concentration to a region of high concentration through a partially permeable
membrane
B
c.
high concentration to a region of low concentration through a partially permeable
membrane
low concentration to a region of high concentration with or without passing through
partially permeable membrane
high concentration to a region of low concentration with or without passing through
partially permeable membrane​

High concentration to low concentration with or without a partially permeable membrane

Explanation:

Diffusion is the movement of particles from a region of high concentration (where there is alot of the particle) to a region of low concentration (where there is less of the particle) until it is evenly distributed.

The definition didn't state whether or not a partially permeable membrane was required.

It doesn't have to pass through a membrane. for e.g. spraying perfume at one side of the room and it is smelt on the other side. Meaning it diffused through the room. There was no membrane present.

It can also pass through a membrane for e.g diffusion of oxygen gas into cells (cells have membranes therefore the oxygen diffused through the membrane.)

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

i won't lie i don't know so go online and ask google thats what i do