Which statement is evidence that the components of the genetic code are common to all organisms? A. All animals have the same four nitrogenous bases in common with each other.

B. All eukaryotes have the same four nitrogenous bases in common with each other.

C. All living organisms have the same four nitrogenous bases in common with each other.

D. All prokaryotes have the same four nitrogenous bases in common with each other.

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Name the type of chemical that speeds up digestion

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.