You’ve made the hypothesis that the steeper the slope the faster a ball will be rolling when it reaches the bottom. what should be your independent variable in an experiment testing this hypothesis a)how tall the slope is b)how steep the slope c)how fast the ball is rolling at the top d)how fast the ball is rolling at the bottom

The energy of blowing wind can be harnessed to create electricity. why is wind considered a renewable energy source? a) wind does not cause destruction of the environment.b) wind turns the blades of a windmill that creates electricity.c) wind provides only a very small amount of electricity to the united states.d) wind comes from atmospheric conditions that are available indefinitely.

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to

How do living things obtain phosphorus