humans born with either below normal or above normal birth weights have a lower chance of survival than those born with average birth weights. Consequently, birth weights vary little in human population. This form of natural selection is called?

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