Over a long period of time (> 0.5 Ma), boisei had a diet predominantly composed of C4 resources, most likely grasses or sedges (Turkana, Baringo, Natron, and Olduvai regions).
Massive and low-cusped postcanine teeth, thick and large mandibular corpora, and strong masticatory muscles are all characteristics of the East African hominid Paranthropus boisei that are usually thought to be adaptations for a diet of nuts, seeds, and hard fruit.
This hypothesis was based on analyses of the morphology of P. boisei, but it also received indirect support from dental microwear studies of P. robustus, a close relative. These studies found that the South African Paranthropus had molar wear consistent with it having ingested and chewed small, hard food items, if not as primary resources then at least as backup foods.
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Answer:
It supports the hypothesis that species change over time.
Answer:It doesn't present information from an unbiased source.
Explanation:
The survey research is based solely on one business or company which conducted this survey and McDonald is a company that sells food which may be critized by health experts as the kind of food which when is eaten constantly will result to obesity.
Chances are when a company conduct a survey which may affect the operation of their own business it is very likely that they may distort the results to ensure this doesn't stab them at the back.
No one will wants to say anything that may jeopardize their own operation and probably put them out of business or lower the number of their customers .
