Scientists are able to date how old the fossil is. They also can see odd immigration patterns, which is how they came about things like Pangea.
The European Energy Security Strategy (2014) which acts as guidance for these policies emphasizes the need to become less dependent on other countries.
The answer is petroleum
hope this helps!
<span>Earth’s rotation takes about
24 hours. By definition, the rotation of earth is the amount of time it takes
to rotate once around its axis. On average, this apparently happens once a day i.e
after every 24 hours with respect to the sun (solar day) and once after every
23 hours, 56 minutes and 4.09 seconds with respect to the stars (sidereal day).
</span>
