Define sustainability in an agricultural context. In what ways is modern industrial agriculture unsustainable?
What will be an ideal response?
A sustainable farm might look like the "large farms we are used to, though with fewer chemicals, fewer fossil fuels, and fewer of the most wasteful types of irrigation." Modern industrial agriculture uses large amounts of chemical fertilizer, is fossil fuel intensive, uses large-scale irrigation, and lacks polyculture.
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_______ organisms make their own nutrients. Fill in the blank(s) with the appropriate word(s)
A crystal with a well-defined shape, such as a cube, probably
A. does not have a well-defined cleavage. B. grew early and so was forced to grow around other minerals. C. does not reflect the arrangement of atoms in the lattice. D. will react with dilute hydrochloric acid. E. None of these choices are correct.
In shallow-water waves the water depth is less than the ________ divided by twenty
A) wave base B) wave height C) wave period D) wave steepness E) wavelength
Which is an example of an authigenic sediment?
a. Quartz sand b. Manganese nodules c. Volcanic dust d. Diatomaceous earth