Scientists Infer That Chemical Weathering of Crustal Rocks Is Not

question 38

Multiple Choice

Scientists infer that chemical weathering of crustal rocks is not the only source of some minerals,such as chlorine,bromine,sulfur,and boron because ________.

• A)those minerals have the wrong isotopic composition for weathering products of crustal rocks
• B)there are more of those minerals in the oceans than can be derived from crustal rocks alone
• C)some of the minerals are only found in meteorites and must have an extraterrestrial source
• D)the minerals are highly reactive and are not found as compounds that would come from crustal material
• E)none of the above

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