Explain the difference between the Umayyad and Abbasıd Caliphates as described in source 1​

Nscience we assume that the force of gravity behaves the same way beyond earth. using this assumptions, we can use the gravitational forces from the sun and moon to explain a: the tides b: a lunar eclipse c: the length of a day d: the revolution of the earth hurry i am timed : ) will give brainliest

At the end of your presentation, the main points should be a summarized c. handed to your teacher b. written on the board d. restated by the audience select the best answer from the choices provided mark this and retum next submit

If a(x) and b(x) are linear functions with one variable, which of the following expressions produces a quadratic function? (ab)(x) (a – b)(x) (a + b)(x)