What is diffusion?
Combining of particles
Absence of particles
Separation of particles
Spreading of particles
Which factors affect the rate of diffusion?
Temperature, light, and particle size
Temperature, concentration, and particle size
Light, concentration, and pressure
Concentration, pressure, and particle size
What happens to particles during diffusion?
They move in random directions
They move from high to low concentration areas
They move from low to high concentration areas
They stay in the same area
What is the purpose of diffusion in living organisms?
To protect the body from foreign substances
To eliminate waste products from the body
To control the body temperature
To transport essential substances throughout the body