Which of the following is NOT a result of acid deposition?
A) Release of aluminum and magnesium from clay mineral in soils
B) Formation of highly toxic methylmercury in acidified lake waters
C) Increase in nutrients in forest ecosystems
D) Acidification of lakes
C
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Primary pollutants are
A. chemicals or substances emitted directly into the air. B. those formed from reactions with other pollutants in the atmosphere. C. found only in stratospheric ozone. D. also known as natural pollutants. E. found only in fossil fuels.
____________________ is a discharge of electricity, a giant spark, which usually occurs in mature thunderstorms
Fill in the blank with correct word.
Which of the following minerals comprises just one element?
A) diamond B) halite C) quartz D) talc
An irregular coast with bays separated by headlands can be straightened by plate tectonic forces.
Answer the following statement true (T) or false (F)