Tiny solid or liquid particles of various compositions that are suspended in the atmosphere are called ____
A) aerosols
B) carcinogens
C) greenhouse gases
D) chlorofluorocarbons
A
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Only eight elements make up the vast majority of rock-forming minerals. Which of the following elements is not one of the eight?
A) Oxygen B) Hydrogen C) Iron D) Potassium
A typical sample of brass is 67% (w/w) copper and 33% (w/w) zinc, and has a density of 8.40 g/mL. What is the molarity of this solution?
A) 33 M B) 42 M C) 88 M D) 67 M
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.
What type of slope failure is shown in this figure?
A. rock slide B. debris flow C. creep D. debris avalanche E. rock fall