Because the idea hadn't formed to a theory because it had little to no evidence and A and C show the two continents connecting previously and explains that these animals couldn't of swam or flew all the way across the world supporting his idea of pangea.
For climate of a place in order to be simplified and organized and generalized needs to be classified into the understandable forms as accordance to the climatic data obtained for the diverse classification and a compressive view of the climate and a broadly distributed over the earth is represented by the Koppen's climatic classification wee each climate is diverse and given different type of names and numbers.
<u>Such as those of the A (tropical), the B (dry), and the C (temperate), D (continental), and the E (polar). On the basis of the seasonal rainfall and the type of vegetation found in various regions on the earth.</u>
