To meet current USDA organic food standards, 100% organic certified foods may be
A) genetically engineered.
B) irradiated.
C) fertilized with sewage sludge.
D) meat, grains, or vegetables.
D
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This is the most fundamental reason why Earth currently has an atmosphere
A) strong winds keep the atmosphere moving horizontally above the Earth. B) the Earth's magnetic field prevents gas molecules from escaping into space. C) the Earth's gravity is strong enough to prevent most gases from escaping into space. D) Earth's atmosphere is quite dense, and thus very viscous. E) the solar wind constantly adds gas particles to the atmosphere.
Which of the following is not considered to be part of a typical ocean basin?
A) a linear chain of volcanoes B) large expanses of flat plains C) deep canyons D) granitic intrusions
An environmental impact statement is required ________.
- to be put to voters on every local ballot if federal action may affect local environments - before Congress can pass any law - for implementation of any program funded by the World Bank - only by executive order - for any federal action that may affect U.S. environmental quality
The rocks on the bottom of a pile of sedimentary rocks are ____________________ in age than the
rocks above them. Fill in the blank(s) with the appropriate word(s).