1. use model 1 to show which atoms are present in each type of molecule by listing the symbol for each atom included. carbohydrate has been done for you. a. carbohydrate— c, h, o c. amino acid—b. lipid— d. nucleic acid—

The body is protected against harmful flu viruses by

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Regarding most of the narrator’s story, which word best describes the tone?