The 1991 eruption of Mt. Pinatubo cooled the Earth's climate the following year
Indicate whether the statement is true or false
TRUE
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Some birds consume certain soils in what is called geophagy. In some cases, the soils help the birds digest toxins that occur in their diets. These birds eating soil represent a member of the
A) biosphere consuming a component of the lithosphere. B) hydrosphere consuming a component of the atmosphere. C) lithosphere consuming a component of the biosphere. D) atmosphere consuming a component of the hydrosphere.
Surface pressure is about
A) 1500mb. B) 2500mb. C) 1000mb. D) 200mb. E) 20mb.
Which of the following is the net ionic equation for the reaction of the strong acid HCl with the strong base NaOH?
A) H3O+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) ? Na+(aq) + Cl-(aq) + 2H2O(l) B) HCl(aq) + NaOH(aq) ? NaCl(aq) + H2O(l) C) H3O+(aq) + OH-(aq) ? H2O(l) D) none of these
Which of the following does not describe an index fossil?
A. Good correlation tool B. Poor tool for determining relative age C. Geographically widespread species D. Short-lived species E. Existed during a specific time-period