In your own words, describe the role of the scientific method in scientific investigation.

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.