Pls asap my ! xander is gaining weight. which best describes what he can do to prevent obesity? a exercise every day and also make healthy choices in his diet b excercise once a week but make no change in his diet c exercise once a week and also make healthy choices in his diet d exercise every day but make no change in his diet

Competition occurs between species when

Explain the significance of the increased cell specialization of the volvocine line

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.