Which best describes what hydrologists study?
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a. earth's atmosphere and weather
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b. the movement and distribution of water and ice on earth
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c. plant and animal life on earth and other planets
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d. rocks on earth and other planets

What claim did thorne make? what evidence supported his claim?

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z