Data-based question: cranial capacity and diet
1a. As the cranial capacity increases, so does the percent of energy allocated to the brain. While most of these species show a linear relationship with each other, modern chimpanzees and p. boisei do not.
1b. If the brain size is bigger there is more energy allocated as cranial capacity, therefore higher dietary energy is necessary. Also, the communication and knowledge is also better ,therefore information necessary for dietary energy is easier to understand and learn.
2a. By looking at dental records such as the teeth, it can be inferred what food was consumed. Also, if we try to find human teeth marks on animals, we can see if they were consumed.
2b. Eating meat can provide more energy and proteins to hominids. This energy can then help increase the size of the brain.
3a. As the brain size increases, so does the relative diet quality. Humans have the highest brain size as well as dietary energy.
3b. Humans may be above the trend line if they formed a species in a different niche and took advantages of the resources that were provided.