Which of the following ions is associated with the heme portion of hemoglobin?
A) Ca2+
B) Fe2+
C) Mg2+
D) Zn2+
B
Environmental & Atmospheric Sciences
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Which amino acid other than methionine is coded for by only a single codon?
A) glycine B) phenylalanine C) proline D) tryptophan
Environmental & Atmospheric Sciences
Each number on this figure refers to a location with groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which one would have groundwater flowing to the left?
A. 1 B. 2 C. 3 D. 4 E. 5
Environmental & Atmospheric Sciences
Which of the following atmospheric conditions °Ccurs when an air parcel is given a small push upward and it continues to move upward on its own accord?
A. unstable B. dynamic C. stable D. buoyant
Environmental & Atmospheric Sciences
What is the residence time of oxygen in the Earth's atmosphere?
A) 10 years B) 100 years C) 500 years D) 5000 years
Environmental & Atmospheric Sciences