The oldest archaeological evidence of habitation in the park are shell "middens". Look up a definition of this term. Which of the following fits best? a) Layers of old shells discarded by people. b) Charcoal layers that are evidence of humans burning wood. c) Small habitations that would hold 1-2 families. d) Tools used to open shellfish or work leather for clothing. e) Fragments of human bone that look like shells and can be dated to give an age of how old a village is.