The rock type that is the most common setting for caves formed by dissolution of a rock is
A) well-sorted sandstone.
B) gray limestone.
C) dark porous lava flows.
D) gray granite.
E) slate.
B) gray limestone.
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Invasive species have been
A) hunted to extinction in most places where they occur. B) successfully controlled in most regions using predators, viral agents, or bacterial agents. C) successfully controlled by the introduction of other alien species that are natural competitors. D) an ecological problem in North America since the first European colonists arrived.
The smallest temperature increases due to global warming are expected in the middle latitudes
Indicate whether the statement is true or false
Given that gneiss is commonly composed of quartz, feldspar, and mica, what igneous rock is a possible protolith for gneiss?
A. Schist B. Basalt C. Granite D. Gabbro E. Shale
The Wilson Cycle describes
A. the cycle of splitting of a supercontinent, opening of an ocean basin, followed by closing of the basin and collision of continents B. the movement of asthenosphere C. the block-faulting that occurs at mountains D. the cycle of uplift and erosion of mountains