________ igneous rocks, like gabbro and basalt, are silica-deficient with high magnesium and iron.
A. Felsic/silicic
B. Intermediate
C. Intrusive
D. Extrusive
E. Mafic
Answer: E
Environmental & Atmospheric Sciences
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The most likely time for a tornado during the day is at
A) 6 a.m. B) noon when the sun is highest in the sky. C) 6 p.m. D) midnight when temperatures are coolest.
Environmental & Atmospheric Sciences
The mineral shown in this photograph is
A) pyrite.
B) hematite.
C) dolomite.
D) gypsum.
E) halite.
Environmental & Atmospheric Sciences
At least 500 mountaintops in West Virginia and other Appalachian states have been removed by mining activities in the region.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
Ethanol in the United States is made mainly from _____ and is used to _____
a. soybeans; heat homes b. sugarcane; fuel cars c. corn; fuel cars d. willow trees; make electricity
Environmental & Atmospheric Sciences