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Primary lymphoid organs: These organs include the bone marrow and the thymus. They create special immune system cells called lymphocytes. Secondary lymphoid organs: These organs include the lymph nodes, the spleen, the tonsils and certain tissue in various mucous membrane layers in the body (for instance in the bowel)
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Answer: Predicting the size, location, and timing of natural hazards is ... of understanding that can be used to predict natural hazards
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population that is unchanging
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C
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The cell wall in only present in plant cells, not animal cells. Hence, the fact that plant cells are rectangular while animal cells are more circular.
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The lack of access to clean drinking water poses a serious health risk around the world, and funds must be raised to help achieve universal access.
