Compared to nonpoint source pollution, point source pollution
a. comes from many sources.
b. is more difficult to control.
c. can be more readily identified.
d. does not happen near rivers.

actually its c! or c. can be more readily identified.

Explanation:

check for the pregnancy rating of drug. if its class c or d see if other alternatives

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