Yellow corn contains substances called carotenoid pigments that animals can convert to vitamin ____________________
Fill in the blank(s) with correct word
A
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One mole of air, initially at 150°C and 8 bar, undergoes the following mechanically reversible changes. It expands isothermally to a pressure such that when it is cooled at constant volume to 50°C its final pressure is 3 bar. Assuming air is an ideal gas for which 
and 
calculate W, Q, ?U, and ?H.
What will be an ideal response?
In order to make a flat ceiling and a vaulted ceiling align on the outside, the ____ must be lowered in the area that has the vaulted ceiling.
A. ?roof B. ?plate C. ?ridge D. ?frame
In the identification system for mild steel FCAW electrodes, the final number indicates ____.
A. the minimum tensile strength of the deposited metal B. the primary welding position for which the electrode is designed C. usability and performance capabilities D. a flux cored electrode
A popular type of drill bit, used for precise, repetitive drilling though a variety of tough materials, is called a __________.
a. masonry bit b. auger bit c. speed-bore bit d. step bit