Land degredation is a major issue worldwide and poses a threat to the sustainability of agriculture and economic development of many third world countries. which answer choice is not a form of land degredation that needs to be addressed? a) wind and wave erosion in coastal regions. b) water erosion from run-off in mountainous regions. c) water erosion during the rainy season in semi-arid regions d) the reclamation of land at the mouths of rivers formed by silt deposits

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. albino x albino a) 1/4 chinchilla, 3/4, agouti b) 3/4 albino, 1/4 chinchilla c) all albino