I would say D! Purely because it is looking at the effects of humans (therefore related to topics more geographical).
Hope that helps. :)
Diffusion is the random movement of molecules or particles from a region of high concentration to a region of low concentration bringing a natural flow in the system. Diffusion ensures that there is a state of equilibrium in the number of molecules in the system.
Answer:
Nucleus
the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Nucleolus
a small dense spherical structure in the nucleus of a cell during interphase.
Answer:
True.
Explaination:
I’ve done this before.
