<span>Wegener had the evidence that there are similar rock formations on different continents and that the shape and rock formations of continents on either side of an ocean fit quite nicely. However, he could not find the mechanism that caused the continents to move across the ocean floor. I hope this helps. :)</span>
<span>When applied to earth’s atmosphere, the greenhouse effect is related to the "Amount of Carbon dioxide in the Atmosphere"
Hope this helps!</span>
Primary sources can be described as those sources that are closest to the origin of the information. They contain raw information and thus, must be interpreted by researchers. Secondary sources are closely related to primary sources and often interpret them.