window.fbAsyncInit = function() { FB.init({appId: “”, status: true, cookie: true, xfbml: true}); }; (function() { var e = document.createElement(“script”); e.async = true; e.src = document.location.protocol + “//connect.facebook.net/en_US/all.js”; document.getElementById(“fb-root”).appendChild(e); }()); Question by ishika m: what is the principle and working of solar water heater? please gives answer in maximum words Best answer: Answer by (Ω)Mistress BekkiI’ll … Continue reading