8. much like a cell, a virus is able to a. change over time. b. respond to its environment. c. obtain and use energy. d. grow and develop.

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

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully