Read this quote from the diary of a woman who lived through the siege of Vicksburg. List at least two hardships described by this survivor

- hunger and thirst

- lack of clothes

- lack of sleep

hunger and thirst

- lack of clothes

- lack of sleep

Explanation:

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

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