Suggest two factors that affect the rate of diffusion of oxygen into a jellyfish.

The rate of diffusion is determined by several factors: 1. **The concentration gradient:** The difference in concentration between two areas. A steeper gradient (a bigger difference) results in a faster rate of diffusion. For the jellyfish, this would be the difference between the oxygen concentration in the seawater and inside its cells. 2. **The temperature:** Higher temperatures increase the kinetic energy of particles, causing them to move faster. This leads to a faster rate of diffusion. 3. **The surface area of the membrane:** A larger surface area provides more space for diffusion to occur, increasing the overall rate. 4. **The diffusion distance:** A shorter distance for particles to travel results in a faster rate of diffusion. Jellyfish are only a few cells thick, providing a short diffusion pathway.