Im not a hundred percent sure but i think its c
Convection occurs in fluids (so both liquids and gases, as well as rheids) and is the concerted, collective movement of groups or aggregates of molecules within the above through advection or diffusion or both at the same time. Convection can never take place in solids and is only specific to fluids.
B with the increase of urbanization comes with more waste
True as the consequences of there actions can be seen in ethnic enclave disputes in other countries that formerly belonged to the Soviet Union.
