A scientist conducted an experiment to determine how the amount of salt in body of water affects the number of plants that can live in the water. In this experiment the dependent variable is

The softest and hardest minerals are: softest hardest

Which type of basaltic lava flow has a fairly smooth

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?