1.0Highway Code Resourceshttps://mocktheorytest.com/resourcesDarren Cottinghamhttps://mocktheorytest.com/resources/author/rddarren/rich600338<blockquote class="wp-embedded-content" data-secret="lYqKsJxTck"><a href="https://mocktheorytest.com/resources/exhaust-pollution-what-is-in-it/">Exhaust pollution: what is in it?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://mocktheorytest.com/resources/exhaust-pollution-what-is-in-it/embed/#?secret=lYqKsJxTck" width="600" height="338" title="“Exhaust pollution: what is in it?” — Highway Code Resources" data-secret="lYqKsJxTck" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://mocktheorytest.com/resources/wp-includes/js/wp-embed.min.js </script> https://mocktheorytest.com/resources/wp-content/uploads/2016/04/smoky-car-exhaust.jpg600409In an ideal world, fuel will burn efficiently to produce just CO2 (carbon dioxide), H20 (water) and N2 (nitrogen), but in reality this never happens. Those three compounds are not toxic to humans and therefore the ever increasing strictness of…Read more ›