Wind erosion "a) removes the fertile horizon of soil" since this is the level of soil that is on the top of the other levels, and is therefore at the mercy of the wind that blows over it.
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Drastic changes in environmental conditions can sometimes cause drastic changes to the gene pool of the population.
Answer;
-The first antibody is specific for the primary amino acid sequence of TT, whereas the second is specific for conformational determinants.
Explanation;
-Antigen-antibody reaction, is a specific chemical interaction between antibodies produced by B cells of the white blood cells and antigens during immune reaction.The specificity of the binding is due to specific chemical constitution of each antibody.
-The amino acid sequence in the tips of the "Y" varies greatly among different antibodies. This variable region, composed of 110-130 amino acids, give the antibody its specificity for binding antigen. The variable region includes the ends of the light and heavy chains.