A ________ is a mushroom-shaped pluton that forms by injecting magma between sedimentary strata, forcing the upper layers to arch upward
A) dike
B) sill
C) batholith
D) laccolith
Answer: D
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Write a children's book about Hal the halite crystal. As the story begins, Hal is residing in a salt deposit in the desert. When the story ends, Hal is residing in the ocean and helping to give the seawater its salty flavor. In your story, tell how Hal ends up in the ocean.
What will be an ideal response?
Piles of rock, debris and earth that pile up at the base of steep slopes are called
A) rockpile. B) debris jumble. C) earth mound. D) talus.
Which of the following best describes the condition of steady-state equilibrium?
A) System inputs always exactly balance outputs so the system never changes. B) System inputs and outputs fluctuate around a stable average so the system does not move far from its average condition. C) System inputs produce large, random fluctuations in output, forcing the system into a new state of equilibrium. D) Systems slowly adjust to long-term changes in input and output.
Which of the following best matches the description?Organisms that live on the bottom of marine or freshwater ecosystems.
A. marsh B. boreal forest C. benthic D. littoral zone E. pelagic F. biochemical oxygen demand G. pioneer community H. grassland I. periphyton J. desert K. tundra L. phytoplankton M. savanna N. euphotic O. deciduous forest