How can local environmental changes have global effects?
a. organisms can move from one environment to another.
b. air and water move from region to region.
c. increased carbon dioxide in one location can cause increased temperatures in other locations
d. all of the above are true.
select the best answer from the choices provided

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.