Which of these is not an organism
a bacteria
b lung
c mold
d human

Why do we perceive objects as retaining their brightness under different lighting levels?

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Construct at least two possible hypotheses for the student’s experiment.