Which is the best example of a response to an external stimulus? drinking water after a long run
avoiding the sun by looking for food at night
a hungry bear hunting for food
falling asleep in the treetops of a forest

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

What did hunter gathers do to alter the environment?

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.