acceptable risk level(Level of risk judged to be outweighed by corresponding benefits or one that is of such a degree that it is considered to pose minimal potential for adverse effects)
status of development(The extent to which a society promotes human well-being in all dimensions of existence by forming people's capabilities, expanding choices and increasing opportunities)
living standard(A measurement of the development level in a country or community, gauged by factors such as personal income, education, life expectancy, food consumption, health care, technology and the use of natural resources)
lead level in blood(A measure of the amount of lead or lead salts absorbed by the body as a possible sign of acute or chronic lead poisoning, which can affect the nervous, digestive or muscular systems)