Unlike a cladogram, a phylogenetic tree
a. includes the dimension of time
b. does not suggest ancestral-descendant relationships
c. is one-dimensional
d. are used by physical anthropologists to identify and assess the utility of traits
e. are used by physical anthropologists to make testable hypotheses regarding relationships between groups of organisms
a
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How does indirect percussion compare to earlier forms of toolmaking?
A) Indirect percussion can be done on harder stones, producing stronger blades. B) Toolmakers have more control and can produce consistently shaped blades. C) Toolmakers could make much smaller blades through indirect percussion than through earlier techniques. D) Only indirect percussion can make blades sharp enough for cutting animal hides.