Mining of aluminum-rich bauxite ore contributes to ________
A) soil fertility
B) desertification
C) coastal degradation
D) soil erosion
E) deforestation
E
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As with material goods, places can be consumed
Indicate whether this statement is true or false.
Continents have a density of ________ and are made of ________ rock
A) 1.9 g/cm3; sandstone B) 4.5 g/cm3; gneiss C) 3.0 g/cm3; basalt D) 2.7 g/cm3; granite
What two features of the magnetic field do magnetic iron-bearing minerals that crystallize out of
magma record? What will be an ideal response?
Penicillin and many other antibiotics are b-lactams. What is the composition of the b-lactam ring?
A) 1 carbon atom and 3 nitrogen atoms B) 2 carbon atoms and two nitrogen atoms with the carbon atoms adjacent C) an alternating sequence of 2 carbon atoms and two nitrogen atoms D) 3 carbon atoms and one nitrogen atom