Mass extinctions occurred at the end of the ____
a. Cambrian, Devonian, and Mississippian
b. Ordovician, Silurian, and Devonian
c. Ordovician, Devonian, and Permian
d. Silurian, Devonian, and Permian
e. Cambrian, Devonian, and Permian
c
You might also like to view...
Most of the gas released by volcanic eruptions is sulfur dioxide.
Answer the following statement true (T) or false (F)
Which of the following locations would contribute to mid-latitude cyclogenesis?
A. the upwind side of a mountain chain B. relatively cold water offshore from a warm land mass C. along cold constant pressure surfaces D. relatively warm water offshore from a cold land mass
Earth materials through which water flows rapidly:
a. have a high porosity. b. have a low porosity. c. have a high permeability. d. have a low permeability. e. have a high viscosity.
Clay minerals formed from gabbro or diorite bedrock illustrate which kind of weathering?
A) syntropical B) mechanical C) chemical D) proactive