Which of the following about abiotic factors in ecosystems is true?
a. abiotic factors in healthy ecosystems are not in balance.
b. abiotic factors are located in the soil of ecosystems only.
c. abiotic factors are part of a dynamic system.
d. abiotic factors in ecosystems are used up by the living components.

feral cats are estimated to eat tens of millions of native animals each night in australia

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.

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