The anti-clotting properties of aspirin are reduced by which of the following?
A) acetaminophen
B) ibuprofen
C) diclofenac
D) all of these
B
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Someone argues that he or she doesn't drink tap water because it contains thousands of molecules of some impurity in each glass
How would you respond in defense of the water's purity, if it indeed does contain thousands of molecules of some impurity per glass? A) Impurities aren't necessarily bad, in fact, they may be good for you. B) The water contains water molecules and each water molecule is pure. C) There's no defense. If the water contains impurities it should not be drunk. D) Compared to the billions and billions of water molecules, a thousand molecules of something else is practically nothing.
True or False: All clay-size grains in a clastic sedimentary rock are clay minerals
Indicate whether this statement is true or false.
Earthquakes are likely to occur ________
A) as a result of volcanic activity B) in areas far from tectonic plate boundaries C) at the boundaries of igneous and sedimentary rock D) along tectonic plate boundaries where there is movement E) where the mantle and the crust make contact
Which of the following accurately describes the use of tree rings for studying past climates (dendroclimatology)?
A) The width of annual tree rings indicates the climatic conditions; wider rings suggest favorable conditions, whereas narrower rings suggest harsher conditions. B) Dendrochronology is primarily used in the tropical regions, where one can easily correlate a tree species' age with the climatic conditions there. C) Because most trees only live 60 to 100 years, dendrochronology can only serve as a climate record for recent history and are primarily used to supplement instrument data. D) The age of trees can be determined by tree ring analysis. By establishing the age of long-lived trees, one can determine the climate conditions of the area the year the tree sprouted.