8. how does the arctic fox survive the harsh winters in the tundra?
o
a it feeds on large amounts of mosses, lichens, and insects.
b it feeds on animals that it captured during the summer and then
stored underground.
c it hibernates during the winter and does not wake to eat.
d it migrates to coastal areas during the winter months to catch fish.

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.