Exergonic reactions produce products with a energy level than that of the initial reactants.

lower

higher

the same

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

can you make it bigger i can't see it

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.