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 heavy the ball is
b. how steep the slope is
c. how high the ball starts on the slope
d. how fast the ball is rolling at the bottom

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***