Chemical sedimentary rocks form from materials ________
A) too fine to see without a microscope B) carried in solution
C) that form weak bonds with oxygen D) all of the above
B
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Which type of radiation-alpha, beta, or gamma-results in the greatest change in atomic mass number?
A. beta radiation B. alpha radiation C. gamma radiation D. They all result in the same change in atomic mass number.
The formation of the isthmus of Panama, dividing the Pacific Ocean from the Caribbean Sea, resulted in many instances of
A. sympatric speciation. B. allopatric speciation. C. gene flow. D. polyploidy.
What is an advantage of deep-well disposal of liquid hazardous wastes?
A. Liquid wastes are safer than solid wastes. B. Well casings never leak. C. Waste production is discouraged. D. Carbon dioxide and other air pollutants are not emitted. E. Wastes can often be retrieved.
The process of _____ generates the oxygen that we breathe and the food that we eat.
A) photosynthesis B) cellular respiration C) chlorophyllization D) chemosynthesis