2. Alfred Wegener, german scientist, graduated with a Ph.D in asthrophysics from the XXXXXXXXXX XX XXXXXX XXX had a XXXX XXXXXXXXXXXX about XXXXXXXXXX,proposed a XXXXXXXXXXXXXXXX XXXXXXXX the XXXXXX XXXX XXXX origin to XXX continents' current XXXXXXXX. Itwasatfirst ridiculed XX the scientific XXXXXXXXX, XXXXXXX he didn't XXXX enough XXXXXXXX XX XXXXXXX it.
3. XX the XXXXX, XXXXXXXXXX actually confirmed XXXX hyphothesisthanks XX XXX XXXXX XXXXXXXXX XXXXXX, which XXX accepted by XXXXXX all geologists.
X. The XXXXX XXXXXXXXX theoryis XXX XXX that XXXXXXXXX XXXXXX XXXXX's XXXXXXXX shell is XXXXXXXXXX XXXX XXXXXXX XXXXXX XXX over XXX the XXXX mantle XXXX covers the XXXXXX's core, which XX XXXXXXXXXX the XXXXXX XXXXXXX XX the XXXXXXXXXX XXXXX theory
5. XXXXXXX XXXXXXXX the scientific XXXXXX to structurethis theory, by oberving the XXXX XXX shape XX XXX XXXXX XXXXXXXXXX in XXXXXX Earth. XX was intrigued XX XXX XXXXXXXX shapes of XXXXX continents when XXXXXXX together, for XXXXXXX: XXX Appalachian mountains "XXXXXXX" XXXX the XXXXXXXX XXXXXXX territory and also the XXXXXX system in South Africawith XXX XXXXX XXXXXXXX XXXXXX in XXXXXX.
X. In XXXXXXX day, scientists are using fossilsin order XX "locate XXX pieces XX the XXXXXX", as XXXX XXXXX XXX. The XXXXXXX that, when XXXXX XXXXXX XXXXX XXXXXXXX, XXXX XXXX a XXXXXXXXXXXXXX XXXX leaves XXXXXX (XXXX fossils). Pangaea XX XXX last one XX be XXXXXX, so XXXX XXX XXXXX determining XXXXX XXXXXXXXXXXXX XXXX XXXXXX XXX also following the current XXXXXXXXX of the continents.