E) Energy Pyramid
Technically it's an ecological pyramid, but E seems to be the closest to that.
The answer is: There will be more mold on the moist slice and still none of the dry slice.
Molds belong to the kingdom Fungi. They are multicellular fungi consisting of multicellular filaments (hyphae). For growth, all molds need moist surface. This is the reason why in Gene's experiment, the only moist slice of bread was moldy. They have short life cycle, so 5 days were enough for molds to cover 50% of moist slice. Extended period of time will allow molds to spread more through moist surface if the surface remain moist.
.........................................................ATP
Last one: blood going to the cells receives co2