____________________ represent the sum of all feeding relationships in an ecosystem
Fill in the blank(s) with the appropriate word(s).
ANS: Food webs
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The following data are from the U.S. EPA AP-42 emission factors for malt beverages. For a closed fermenter, fermenter venting CO2 = 2,100, VOC (ethanol) = 2.0, and hydrogen sulfide, H2S = 0.015. The units for the emission factors in the EPA tables are in lbs of pollutant per 1000 barrels (bbl). A brewery produces about 7 million barrels of product per year. Estimate the emissions of
a. Kg of carbon dioxide per year from fermenter venting b. Kg of VOCs (ethanol) per year from fermenter venting c. Kg of hydrogen sulfide per year from fermenter venting What will be an ideal response?
Fire-escape stairs in contemporary buildings are generally constructed of prefabricated, U-shaped stairs with an intermediate landing between adjacent floors. How are they supported?
What will be an ideal response?
Air-conditioning systems normally move about ____________________ cfm of air per ton.
Fill in the blank(s) with the appropriate word(s).
Analyze the reinforced concrete box in Figure P11.13 by moment distribution. Modify stiffnesses as discussed in Section 11.5. Draw the shear and moment curves for the top slab AB. Given: EI is constant.
