Sufficient ____ reduces soil erosion
a. irrigation
b. soil fertilization
c. plant cover
d. weathering
e. limiting resources
c
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The rising of bread dough is the result of
A) biotin production. B) carbon dioxide produced by fermentation. C) oxidative phosphorylation. D) oxygen being released.
The genetic code, which specifies the three-letter codons that specify particular amino acids, is said to be redundant because ________
A) amino acid sequences are produced by different alleles B) it is observed in virtually all know organisms C) one codon can code for more than one amino acid D) phenotypic variation is observed depending on the codon usage E) some amino acids are coded for by more than one codon
An ex-smoker with emphysema has a pulmonary erosion into his intrapleural space. What life-threatening condition is he at imminent risk of developing?
A) bacterial pneumonia B) pulmonary fibrosis C) pneumothorax (air leaking into the intrapleural space) D) adhesions to the parietal pleura E) acute respiratory distress syndrome (ARDS)
In countries that have large numbers of children under age 15, the population is
A) hard to predict. B) able to expand its carrying capacity. C) becoming larger. D) becoming smaller. E) staying the same.