Which fossils do invertebrate paleontologists study? a. bacteria b. human c. mollusk d. snake e. tree

C. mollusk

Explanation:

Mollusks are the invertebrates organisms and would be studied by invertebrate paleontologists. All the organisms that lack the vertebral column are grouped under invertebrates. It includes nematodes, arthropods, annelids, echinoderms, mollusks, etc. Hence, the absence of spine makes the mollusks invertebrates.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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layer 3 is younger than layer 6.