Answer:
evolution of bidepadlism,
increase in enamel thickness,
regular use of stone tools, enlargement of brain to around 1,450 cc
Explanation:
They have been in the Northern and Southern polar regions, and not within the inner part of earth, maybe due to there location
Well it’s obvious that they both use Photosynthesis to make there own food, and also they both use chemosynthesis the produce there own food. Very simple. :)