What two chemical elements are most abundant in the deep interior of the earth?
A) magnesium and oxygen B) iron and magnesium
C) hydrogen and helium D) silicon and oxygen
B
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The Basel Convention, Aarhus Convention, the exposure of the Navajo Nation to radioactive elements in mining operations, and the plight of residents of Emelle, Alabama, are aspects of
A) funding for the cleanup of toxic spills and contamination. B) ecosystem protection. C) environmental justice. D) recycling of hazardous wastes.
Sea level rose 1 foot in the 20th century. It is expected to rise again by ________ in the 21st century.
A. 1.0 to 1.5 feet B. 2.0 or more feet C. at least 8 feet D. 6 inches to 1 foot E. 6 inches or less
The cosmogony underlying Chinese ethnic religions, such as Confucianism and Daoism, is that the universe is made up of two forces, yin and yang, which exist in everything
Indicate whether the statement is true or false.
Light that travels from a less to a more dense medium bends ____ the normal
A) away from B) toward C) adjacent to D) parallel to