The largest layer (by volume) of Earth, ____, is composed primarily of _____.
a. the mantle; iron and nickel alloy
b. the crust; peridotite
c. the mantle; peridotite
d. the crust; quartz
e. the core; iron and nickel alloy
c. the mantle; periodtite
Environmental & Atmospheric Sciences
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When stripping electrons from an atom, the atom becomes a
A. different element. B. negative ion. C. isotope. D. positive ion.
Environmental & Atmospheric Sciences
Name the three vector data formats that Esri has developed since the 1980s.
What will be an ideal response?
Environmental & Atmospheric Sciences
How do silica tetrahedra bond in silicate minerals?
A. with other elements, such as potassium B. in single or double chains C. with each other by sharing an oxygen D. in sheets E. All of these choices are correct.
Environmental & Atmospheric Sciences
Natural pyrethrins contain which of the following functional groups?
A) amide B) anhydride C) ester D) none of these
Environmental & Atmospheric Sciences