In using heat treatment to control pathogens of propagation media, it is more desirable to ________ than to ________ the media.
Fill in the blank(s) with the appropriate word(s).
pasteurize; sterilize
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Hinton R. Helper's book, The Impending Crisis of the South, argued that those who suffered most from slave labor were
A. African Americans. B. southern planters. C. northern Republican abolitionists. D. western farmers. E. non-slaveholding southern whites.
The Aztec chief Moctezuma allowed Cortés to enter the capital of Tenochtitlán because
A. Cortés's army was so powerful. B. Montezuma believed that Cortés was the god Quetzalcoatl. C. there was little in the city of interest to the Spanish. D. he was told to do so by the gods. E. the Treaty of Tordesillas gave the capital to the Spanish government.
Why do you have to discard the emery board after used?
What will be an ideal response?
In most commercial air handlers
A) the blower draws the air across the coil B) the air passes through the unit twice: once for the blower and another time for the coil C) the blower and coil are located in separate component parts of the system D) the blower forces the air across the coil