Which of these describe(s) variation within a species or population? A population is defined as members of the same species living together in the same area and who are likely to breed with each other. A-hummingbirds have beaks able to collect nectar from flowers while woodpeckers have beaks able to collect insects from tree bark

B-polar bears have differences in the number of hairs per square inch of their skin

C-evergreen trees have needle-like leaves

D-fish use gills to obtain oxygen from water

Read the excerpt from the time traveler's guide to elizabethan england.simon forman, who does attend plague sufferers, is a rare exception: this is because he has himself survived the disease and believes he cannot catch it again. however, his remedy amounts to little more than avoiding eating onions and keeping warm. he has a recipe for getting rid of the plague sores that will afflict you afterward if you survive the disease; but that is a very big "if.” it seems the best advice is provided by nicholas bownd in his book medicines for the plague: "in these dangerous times god must be our only defense.”which lines best summarize the excerpt?