A scientist gives three trees of the same size and species different amounts of water all summer. He measures how fast the trees grow. What is the
manipulated variable in this experiment?
O A. The size of the trees
B. The month the trees are measured
C. The growth rate of the trees
D. The amount of water

the amount of current in the coil

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.