What is the study of dust in relation to its effects on health

The study that is in relation with effect of health is known as Coniology.

It has been investigated in one of the studies that dust can bring huge negative impact on the health conditions. There is massive exposure in some countries of the dust as well as ultrafine and fine condition too. It uses the instrument of coniometer for counting the atmosphere components.  

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;