Which of the following amino acids absorbs UV radiation at 280 nm?
A) arginine
B) alanine
C) leucine
D) tyrosine
D
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Which of the following farming practices would be expected to produce the least nutrient leaching and thus contribute most to soil sustainability?
A) Deep plowing, irrigation, and the use of inorganic fertilizers B) Deep plowing, no irrigation, and the use of inorganic fertilizers C) No plowing, irrigation, and the use of organic fertilizers D) No plowing, drip irrigation, and the use of organic fertilizers
What are the four approaches proposed by scientists to speed up ecological succession processes?
What will be an ideal response?
What is the formula of the compound formed between the ammonium ion and the carbonate ion?
A) NH4CO3 B) NH4(CO3)2 C) (NH4)2CO3 D) (NH4)3CO3
In order for livestock to be considered organic, ________
A) hormones and antibiotics are permitted, but not vaccines B) animals must be fed 100% organic agricultural feed C) no vitamins and mineral supplements can be used D) animals cannot be transferred from regular treatment to organic standards E) animals must be reared under natural conditions in intact ecosystems