Images that you see in your peripheral vision are not as sharp as those directly in front of you because: there is a higher concentration of cone cells in the center of the retina in an area called the fovea. there are fewer rod cells in areas of the retina where images from the periphery are focused. the lens cannot focus images well on areas of the retina where images from the periphery are projected. the rod cells in the periphery are sensitive to blue and green light only.

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.