in scenario no2 a scientist wanted to see if the number of eggs in a nest( clutch size)varied according to lattitude she decided to study a specific species of bird found in both the tropical and temperate zone areas. one hundred nests were examined but not disturbed in each of three temperate zone areas and three tropical zone areas( for a total of 600 nests) in each case the number of eggs was counted tell the independent, dependent variables, constants , controls, hypothesis, sample size and presence of repeated measures