Which situation would be most likely to cause a DNA mutation? A. A maple tree becomes dormant to prevent water loss during a drought. B. A person spends one hour each day under the ultraviolet rays of a tanning bed. C. A wood frog in a lake is exposed to temperatures below 0°C during the winter months. D. A culture of cells is placed in a chamber and exposed to high pressure for 10 hours.

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.