Mass extinctions at the end of the Ordovician occurred because of ____.
A) dramatic changes related to glaciation
B) dramatic chemical changes in seawater related to meteorite impact
C) increased solar radiation
D) increased sea levels
E) increased volcanism
Correct Answer:
Verified
Q26: The Cambrian explosion refers to _.
A) a
Q27: Shallow water fauna and phytoplankton are stressed
Q28: Archaeocyathid, bryozoan, and stromatoporoid fossils indicate which
Q29: Trilobites, an abundant organism during the Early
Q30: All bottom-dwelling marine organisms that live on
Q32: Organisms that move on the seafloor are
Q33: In the marine ecosystem, a shark would
Q34: The extinction event at the end of
Q35: Which group feeds on microscopic plants, animals,
Q36: Which characteristic does not apply to trilobites?
A)
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