The correct answer is: d) global cooling 2.8 million years ago resulted in dry grassland replacing wet forests in parts of Africa.
Coordinated stasis describes that certain groups of species don’t change for tens of millions of years and then experience the rapid extinction and the formation of new species. Coordinated stasis is related to punctuated equilibrium where communities of species closely interact and because of that don’t evolve. Instead of that, they respond to environmental change by moving as a group to a different location.
