Answer:
One Idea was the appreciation that the age of the Earth was much greater than had hitherto for been imagined.
 
        
             
        
        
        
We examined the biogeographic patterns implied by early hominid phylogenies and compared them to the known dispersal patterns of Plio-Pleistocene African mammals. All recent published phylogenies require between four and seven hominid dispersal events between southern Africa, eastern Africa, and the Malawi Rift, a greater number of dispersals than has previously been supposed. Most hominid species dispersed at the same time and in the same direction as other African mammals. However, depending on the ages of critical hominid specimens, many phylogenies identify at least one hominid species that dispersed in the direction opposite that of contemporaneous mammals. This suggests that those hominids may have possessed adaptations that allowed them to depart from continental patterns of mammalian dispersal.
plz mark me as brainliest if this helped :)
 
        
             
        
        
        
I believe it would be an observation
Observation in scientific process refers to gathering facts and information. In this particular context, we could see that the microbiologist is simply stating what he/she saw on the mold on the agar plate. The microbiologist simply writing down all the facts without making any explanation or assumption.
        
             
        
        
        
Answer:
evolution of bidepadlism, 
increase in enamel thickness,
 regular use of stone tools, enlargement of brain to around 1,450 cc
Explanation:
 
        
             
        
        
        
Answer:
because the frog is not really persons that the reasons why frog less the circulatory sysyem