[Solved] Both religious activity and participation in service learning programs are predictors of A) a sexual dysfunction. B) erotic plasticity. C) teen sexual abstinence. D) paraphilias. Calcium: A chemical element with the symbol Ca and atomic number 20, a reactive, pale yellow metal that forms compounds with many other elements. Ionic Formula: A notation that represents the composition of an ionic compound by showing the ratio of ions present in the compound. Compound: A substance formed from two or more chemical elements chemically bonded together, with a fixed ratio determining its composition. Fe2+: Ferrous ion, a form of the iron ion where iron has a valency of +2, commonly involved in redox reactions and an essential part of hemoglobin.