In arid terrestrial environments, salt can accumulate in the soil because of

A. the selective uptake of water by plants.
B. the activities of grazing animals.
C. the precipitation of salt from dry air.
D. the secretion of salt by plants.
E. the settlement and evaporation of water.


E. the settlement and evaporation of water.

Biology & Microbiology

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Indicate whether the statement is true or false.

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The first portion of the small intestines is the ____

a. cecum b. jejunum c. ileum d. duodenum e. appendix

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Which is false regarding the two-component regulatory system in bacteria?

A. One part of the system is exposed to the external cellular environment while another part is exposed to the cytoplasm. B. The system involves a sensor kinase and a response regulator. C. The sensor kinase is phosphorylated by the response regulator when the extracellular environment changes. D. Regulation of OmpF and OmpC porin proteins in E. coli is modulated by this type of system.

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Describe an evolutionary arms race with practical application in addition to the arms race effecting the de-velopment of pesticide and antibiotic resistance

What will be an ideal response?

Biology & Microbiology