By the end of prophase, each of the following has occurred except a. tighter coiling of the chromosomes b. breaking down of the nuclear envelope c. disappearing of the nucleolus d. lining up of chromosomes in the cell

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

Does masterbation affect height growth or loss of growth hormone?

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.