To understand Castleman disease, it helps to know about the bodyâs lymph system. Lymphoid tissue, also known as lymphatic tissue, is the main part of the immune system. It is formed by different types of cells that work together to help the body fight infections.
Observation Systems International Program. Demography, the science of human population (or more specifically, the study of population structure. and processes), draws together research from a number of disciplines, including economics, sociology, geography, public health, and genetics. In addition to the environmental impacts of.
Unit II Population and Migration 1 1. Definition of demography 1. Demography is A) the study of the relationship between government and population. B) the study of population. C) the study of population growth. D) the mapping of population characteristics. E) none of the above 2. Arithmetic density, agricultural density, and physiological density 2.