1.0Explore Insidehttps://exploreinside.ngl.cengage.comfrancesca.quinionhttps://exploreinside.ngl.cengage.com/author/francesca-quinion/rich600338<blockquote class="wp-embedded-content" data-secret="dM91ZBL6ib"><a href="https://exploreinside.ngl.cengage.com/">Home</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://exploreinside.ngl.cengage.com/embed/#?secret=dM91ZBL6ib" width="600" height="338" title="“Home” — Explore Inside" data-secret="dM91ZBL6ib" 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://exploreinside.ngl.cengage.com/wp-includes/js/wp-embed.min.js </script> Explore Inside is A COMMUNITY INFORMATIVE INSPIRING A RESOURCE National Geographic Learning programs bring the experiences of National Geographic Explorers and Photographers into the classroom and aim to inspire the next generation of scientists, authors, engineers, and skilled trade workers. But this is for you. Through these pages, we aim to support you by offering classroom tips […]https://exploreinside.ngl.cengage.com/wp-content/uploads/elementor/thumbs/blog_iStock-942607194-qs61ud43gdhwzstvbd0gfgp4mvvknru5a5nwtlep6o.jpg