Which is an important type of physical weathering?
A. Minerals dissolve in water.
B. Water freezes and expands within pore spaces and fractures.
C. Plant roots excrete organic acids.
D. Minerals react with water and change shape.
Answer: B
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In a battery, the following two oxidation-reduction reactions are taking place: rxn A: Zn + 2 OH- ? ZnO + H2O + 2e- rxn B: 2 MnO2 + H2O + 2e- ? Mn2O3 + 2 OH- What is undergoing oxidation?
A) Zn B) ZnO C) MnO2 D) H2O E) OH-
Describe the differences between active and passive continental margins. Where is each type found?
What will be an ideal response?
In accordance with Boyle's Law, a gas under constant temperature will ________ in volume when the pressure is ________.
A. decrease; decreased B. keep the same volume regardless of pressure C. decrease; increased D. increase; increased
The Linnaean system of classification is composed of a scientific name for each organism. In order of use, the scientific names give the ________ and the ________ of organisms
A) popular name, species B) species, genus C) genus, species D) species, biodiversity class E) species, habitat type