Mercury (element) polluted water. They arise by a process known as biomethylation. Mercury is used primarily for the manufacture of industrial chemicals or for electrical and electronic applications. It is used in some thermometers, especially ones which are used to measure high temperatures. A still increasing amount is used as gaseous mercury in fluorescent lamps, while most of the other applications are slowly phased out due to health and safety regulations and is in some applications replaced with less toxic but considerably more expensive Galinstan alloy. Mercury and its compounds have been used in medicine, although they are much less common today
Problem-posing education Problem-posing education Problem-posing education is a term coined by Brazilian educator Paulo Freire in his 1970 book "Pedagogy of the Oppressed". Problem-posing refers to a method of teaching that emphasizes critical thinking for the purpose of liberation. Freire used problem-posing as an alternative to the banking model of education. Freire's pedagogy emerged from his observations and experiences working as an instructor in literacy programs with peasant laborers in Brazil. During this work, Freire became aware of the economic, political, and social domination resulting from paternalism. Paternalism leads to a culture of silence, which keeps people from confronting their oppression. He