The big bang theory suggest that the universe formed as a result of a sudden expansion of a dot. what observations about galaxies in the universe provide support for this suggestion?

a physical change is being made.

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

d. organisms have cells with different shapes and functions.