What is required for an igneous rock to weather?
A) It must be uplifted from where it was emplaced.
B) It must be deposited by water or ice.
C) It must be exposed at the surface of the Earth.
D) It must move downslope under the influence of gravity.
C
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What typically happens to poor people born in less-developed countries that already have large populations?
A. They are forced to live on land with degraded soils and water resources. B. They are given their choice of the best farmland. C. They are provided with generous grants from the government. D. They are given equal access to the country's natural resources.
Electric vehicles may still be using fossil fuels
A) because they all have a supplemental gas tank. B) at a greater rate than conventional vehicles. C) because batteries require oil to operate. D) well into the 21st century. E) if their charge comes from fossil-fueled power plants.
Ocean floor subducts under continents because
A) the ocean floor is made up of silica and magnesium and is more dense than continental material. B) the weight of the continents is so great that they push the ocean floor material downward. C) the ocean floor is made of silica and aluminum s and is heavier than continental material. D) the ocean floor has a lower density and therefore sinks more easily.
Which set of fins is used as stabilizers?
A) Anal and caudal B) Anal and dorsal C) Caudal and dorsal D) Caudal and pelvic E) Pectoral and pelvic