I think that the correct answer to this question is D .
Passive diffusion is a form of passive transport and a type of diffusion by which particles from a high concentration gradient passes through a biological membrane to a low concentration gradient. Diffusion, or simple diffusion on the other hand, is the passage of molecules without the need of a membrane.
The answer is hydrogen and oxygen
Answer:
the fact that the bubbles of carbon are bursting due to the high amount of drilling recently
Explanation:
Most likely to be true about a scientific theory: It is accepted by a large scientific community.