Suggest a reason why birds and mammals have fewer offspring compared to chordates​

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.