The semisolid, thick, tarlike petroleum contained in sedimentary rocks that are referred to as tar sands is called
A. kerogen.
B. bitumen.
C. methane hydrate.
D. oil shale.
Answer: B
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Which statement about the properties of Earth’s crust is true at subduction zones?
a. Ocean crust is subducted because it is lighter than continental crust. b. Continental crust is subducted because it is lighter than ocean crust. c. Ocean crust is subducted because it is thicker than continental crust. d. Continental crust is subducted because it is colder and denser than ocean crust. e. Ocean crust is subducted because it is colder and denser than continental crust.
For specifically studying past climates, this "climate clue" reaches the furthest back in time
A) isotopes. B) pollen. C) tree rings. D) glacial features. E) fossils.
Earth's lithosphere moves.
a. true b. false
Trophic Cascade
What will be an ideal response?