Question 7
1 pts
(05.03 LC)
Which of the choices below is the best description of how commensalism differs from
mutualism? (3 points)
One organism is harmed in commensalism, but neither is harmed in mutualism.
One organism is not affected in mutualism, but both are affected in commensalism
Only one organism benefits in commensalism, while both benefit in mutualism,
Only one organism benefits in mutualism, while both benefit in commensalism.

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.