An area of land that drains runoff into a particular body of water such a s a river or ocean Surface water
Surface water

Watershed
Watershed

Run off
Run off

River

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.

answer; decreased;

answer; their own memory abilities;