a kidney is an organ in the human body that helps filter dirt
The Social Credit System (Chinese: 社会信用体系; pinyin: shèhuì xìnyòng tǐxì) is a national reputation system being developed by the Chinese government. The program initiated regional trials in 2009, before launching a national pilot with eight credit scoring firms in 2014. In 2018, these efforts were centralized under the People's Bank of China with participation from the eight firms. By 2020, it is intended to standardize the assessment of citizens' and businesses' economic and social reputation, or 'Social Credit'.
Nucleotide is basically the basic building blocks of either DNA or RNA
A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.