Answer;
Simple diffusion does not require energy.
Explanation;
Passive transport is a type of transport that does not require energy since it lets diffusion move molecules only down their concentration gradient.
Simple diffusion, osmosis, and facilitated diffusion are examples of passive transport.
Explanation: Photosynthesis is slower with underwater plants because carbon dioxide diffuse much more slowly in water than in air underwater leaves lack a waxy coating because carbon dioxide is easier to absorb without this layer.
Here is a graphic comparing the two! hope this answers your question!
Earth climate zones are produced