Question

What’s is wrong with either of these method?

Answer 1

Answer:

I have to go briefly then...........

Direct Diffusion

In simple organisms, such as cnidarians and flatworms, every cell in the body is close to the external environment. Their cells are kept moist so that gases diffuse quickly via direct diffusion. Flatworms are small, literally flat worms, which 'breathe' through diffusion across the outer membrane.