What type of crystal texture is formed when magma cools slowly within warm rock underground?
A) aphanitic
B) porphyritic
C) andesitic
D) phaneritic
Answer: D
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The ecological economist believes that conventional economic growth will eventually ____.
A. pull us out of our dependence on Middle Eastern oil B. lead us into a socialist economy C. become unsustainable because it will deplete natural capital D. lead us into a sustainable economy E. collapse when oil runs out
Marine snow refers to
a. appearance of the water during freezing weather b. animal and plant plankton that die and drift downward c. white sand beaches d. algal blooms e. weather over the Arctic that contributes to the ice pack
An explanation that is supported by many observations, has no major inconsistencies, and is accepted by most scientists is ________
a. a hypothesis b. a law c. a scientific method d. a theory
No-till farming would be most beneficial for farmers ________
A) who typically experience minimal soil erosion B) using contour strip cropping C) who plant a cash crop every third year D) with steeply sloped fields E) whose cropland is in the Conservation Reserve Program