The process in which birds spread oil on their feathers using their beaks is called a. preening c. brooding b. molting d. none of the above

The condition in which joints are inflamed is bursitis select the best answer from the choices provided ot f

Is there any solid scientific evidence that humans have been cloned?

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.