Relative dating best helps determine fossil age. It's where layers of sedimentary rock and fossils pile up on top of each other; the oldest fossils being in the bottom layer and the youngest in the top.
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Derived traits shared among the species or other groups in a dataset are key to helping us build trees. As shown above, shared derived traits tend to form nested patterns that provide information about when branching events occurred in the evolution of the species.
Explanation:
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The answer is A) food web. B is not actually a thing, and C and D are very different vocab words.
I am not sure but here is a link to help you :)
https://www.ncbi.nlm.nih.gov/pubmed/22322095
<span>Forebrain. Forebrain is related to functions of cognitive activities. It is part of brain with other two parts which are hind brain and mid brain. Amygdala related to emotions. Midbrain related to vision, hearing etc. while hindbrain is concerned with control involuntry functions like respiration.</span>