Carolyn wants to bake some chocolate chip cookies. she wonders if shortening or butter produces a chewier cookie. usually she uses butter, but today she decides to conduct an experiment and bake two batches of cookies - one with shortening and one with butter. what is an example of an independent variable in this experiment? which is the control group, and which is the experimental group?

The independent variable would be whether she used butter or shortening. The control group is the cookies with butter and the experimental group is the cookies with the shortening.

40 minutes to complete the english test

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.