Diffusion can be described as the net movement of particles from a region of ......1...... concentration to a region of ......2...... concentration, where the movement is ......3...... a concentration gradient. Which words fill gaps 1, 2 and 3?
- A1: higher, 2: lower, 3: down
- B1: higher, 2: lower, 3: up
- C1: lower, 2: higher, 3: down
- D1: lower, 2: higher, 3: up