Which of the following is an example of a response to an internal stimulus?
a.
an animal responds to a ringing bell.
b.
a person vomits after eating spoiled food.
c.
a person pulls her hand away from a hot surface.
d.
an animal jumps when it hears a sudden, loud noise.
reset submit

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

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.