Group 1 and group 7 of element group consists of alkali metal, which are generally combined with other elements in nature, so they have properties of compound
A compound is a substance formed when two or more chemical elements are chemically bonded together
,"He loved..."(citation). You use an ellipsis the … when using only part of a direct quote
Ben is correct because the planet leaning towards the light is a behavior the plant has learned in order to survive, for the simply fact plants get glucose and photosynthesize from the sun