Identify the interaction described. ✔ commensalism One species benefits and the other species is neither harmed nor helped. ✔ mutualism Both species benefit. ✔ parasitism One species benefits and the other species is harmed.

Arock collection comes from which part of earth?

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?