Soot plays an important role in climate change , but is still the leading cause of earths changing climate. a) acid rain b) nitrous oxide c) carbon monoxide d) carbon dioxide

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.