Would it be possible to have a trophic level above tertiary, with a population of 5 organisms that each need 1 kcal (assume that this higher
level only eats tertiary organisms)?

the denominator has a very specific role.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you

multiply it by 5 in order for you to understand i cant give an exact answer.