What does the constancy of interfacial angles refer to? How did Nicholas Steno explain his
observation? What will be an ideal response?
Nicholas Steno in 1669 determined that the angles of intersection of equivalent crystal faces on
different specimens of the same mineral are identical. He postulated that mineral crystals are made up
of very small, identical building blocks and that the arrangement of these building blocks determines
the external form of the crystals.
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Which of the following factors helps prevent the growth of harmful algal blooms (HABs)?
Large concentrations of Canada Geese Maintaining native plants along waterways Manure runoff from livestock areas Runoff of lawn and crop fertilizers
The two factors which determine whether or not an element can substitute for another element in the composition of a mineral are the ____________________ and ____________________ of the atoms
Fill in the blank(s) with correct word
The Neolithic Revolution is most clearly seen in human culture today in our use of
A) natural wood products from national forests. B) furs from trapped wild animals. C) rivers for navigation and water supplies. D) modern agriculture to raise food crops.
A closed flask contains a 0.25 moles of O2 which exerts a pressure of 0.50 atm. If 0.75 moles of CO2 is added to the container what is the total pressure in the flask?
A) 0.50 atm B) 1.0 atm C) 1.5 atm D) 2.0 atm