Scientists Infer That Chemical Weathering of Crustal Rocks Is not

question 22

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

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