Original sentence: From a chemist's perspective, the term is a misnomer, as no matter that exists in Earth's ecosystems is free of chemicals.However, the use of "chemical free" to indicate that a substance is free of the products of the chemical industry is supported by the Oxford English Dictionary, which gives the following definition (B.The term "chemical," by this definition, is roughly a synonym for matter, and common natural substances such as water and air are considered chemicals.This use of the term chemical in advertising to indicate that a product is free of synthetic chemicals, and the tolerance of its use in this fashion by the United Kingdom's Advertising Standards Authority, have been the subject of criticism.a) of "chemical": "A distinct substance or compound, esp.one which has been chemically prepared or purified
Edited sentence: The term "chemical" is roughly a synonym for matter, and common natural substances such as water and air are considered chemicals.The term is a misnomer, as nothing that physically exists in Earth's ecosystems is free of chemicals.This misuse of the term chemical in advertising and the tolerance of its misuse by the United Kingdom's Advertising Standards Authority have been the subject of criticism