Sustainable development may be possible if materials are recycled to the maximum degree possible, and if one does not have growth in the annual material throughput of the economy
What will be an ideal response?
As discussed in the chapter an investigated above, sustainability depends on
exploiting a lesser or equal amount of a resource than is being produced. Recycling can
help in some cases to increase the availability of some sustainable resource. One obvious
example is the use of manure to fertilize farm fields. Instead of wearing the soil out, the
manure helps rebuild the soil.
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The term light year describes a measurement of _____.
A. Distance B. Prior experiences C. Limited course offerings D. Poverty
To have a negative ion, you must have:
A) taken away a proton from the nucleus. B) added a positron to the nucleus. C) added a positron to the outer electron shell. D) added an electron to the outer electron shell. E) None of these; only positive ions can exist in nature.
When the principal quantum number of the
hydrogen electron is infinite, a) the electron has an orbit of 0.053 nm radius. b) the electron has a binding energy of +13.60 eV. c) the electron has a binding energy of -13.60 eV. d) the electron is no longer bound to the hydrogen nucleus at all.
The reason the north pole of a bar magnet free to rotate points north is because
a. the south geographic pole of the earth is the earth's magnetic north pole. b. the south geographic pole of the earth is the earth's magnetic south pole. c. there is a net accumulation of negative magnetic charge at the earth's south geographic pole. d. there is a net accumulation of positive magnetic charge at the earth's north geographic pole. e. the north geographic pole of the earth is the earth's magnetic north pole.