The quote states that we should be using solar energy before our limited amount of naturally occurring oil and coal runs out. Meaning; we should be proactively working towards solar power rather than to wait for our resource to run out to start.
Meridians are perpendicular to every latitude<span>. ... All the other </span>longitudes are measured<span>, and named after the angle they make with respect to the center of the Earth from the intersection of the Meridian and the Equator. Since a sphere has 360 </span>degrees<span>, the Earth is divided into 360 </span>longitudes<span>.</span>
<span>Robinson projection will be used to examine and compare population densities, using one view of the entire world. This projection depicts the entire world in one view like a flat globe and the latitudes and longitudes as elliptical lines giving a easy way to examine that too accurately.</span>
Hello There! ^_^
Your question: Which one of the following times would be the longest..?
You answer: The Paleozoic Era would be the longest time span.
the answer is option B.
Hope this helps!