you water three sunflower plants with salt water each plant receives a different concentration o n of salt solution 1/4 sunflower plant receives pure water after a two week period the height is measured what is the control in this scenario ​

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

What is the angular momentum of the bar about the axle?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?