What is the major export of australia? why ?

Iron ore

Explanation:

Australia's Other Notable Exports

Iron ore is a significant export product, accounting for 24% of their total annual exports. Key export destinations for Australia are China ($55.1 billion), Japan ($18.9 billion), South Korea ($11.2 billion), the United States ($8.26 billion) and the United Kingdom ($7.41 billion).

Automotive Industry

Explanation:

Cars and other automobiles are an industry worth over 250 billion US dollars worldwide, with production trending towards efficiency and sustainability.

There is an incredible car culture to be found all across the globe, and the $257 billion-dollar automotive industry caters to the needs of this culture in a brilliant fashion. The industry is not only about the selling of cars and other motor vehicles, but also involves the designing, manufacturing, and repair of them as well.

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.