The strip mining of phosphate on the island of Nauru has resulted in A massive immigration and overcrowding on the island
B. environmental and economic problems for the country
С. economic success and a high standard of living for many if correct
D. financial competition between ethnic groups that has led to civil war

Answer

b. environmental and economic problems for the country

Explanation:

hope this help

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

its b i looked it up hope u get it right wish u luck