In a protein antigen, how many amino acids are necessary to interact with an antibody?

A) 1 or 2
B) 3 to 5
C) 5 to 7
D) 10 to 15


C

Environmental & Atmospheric Sciences

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Which mining technique does not generate spoil piles?

A. none that are listed B. underground C. open pit D. strip mine

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Erosion and deposition

A. are usually human-caused processes. B. affect the movement of Earth's tectonic plates. C. occur on land but not in the ocean basin. D. create landforms such as caves, waterfalls, and valleys.

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Among the core principals of the slow cities movement is the concept of

A) community life. B) visualizing geography. C) Disneyfication. D) place commodification. E) pseudoplace.

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What is a 20-year flood? What will be an ideal response?

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