What are two properties that lead to ElectroMagnetic Interactions? please help this is due very soon!!!

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil