Chemistry, 11.10.2019 08:50 shortiibrownskiin
Which type of preservation is made when a mold fills in with sediment, showing the exterior features of an organism?
a. trace fossil
b. carbon film
c. cast
d. microfossil
Answers: 3
Chemistry, 21.06.2019 22:50
Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law
Answers: 1
Chemistry, 22.06.2019 06:00
Compare and contrast physical changes with chemical changes.
Answers: 1
Chemistry, 22.06.2019 16:30
Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory
Answers: 2
Chemistry, 22.06.2019 21:40
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.
Answers: 2
Which type of preservation is made when a mold fills in with sediment, showing the exterior features...
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