Calvin cycle. Definition. noun. A cyclical series of biochemical reactions that occur in the stroma of chloroplasts during photosynthesis. It includes the light-independent reactions such as carbon fixation, reduction reactions and ribulose 1,5-diphosphate (RuDP) whereby sugars and starch are ultimately produced.
In the United States, the American badger can be found from the west coast to Texas, Oklahoma, Missouri, Illinois, Ohio, Michigan and Indiana. It is also found in southern Canada in British Columbia, Manitoba, Alberta and Saskatchewan.
The badger is a  stout animal known for its burrowing ability. Most badgers belong to the weasel family (Mustelidae), which includes animals such as ermines, mink, ferrets, marten, and wolverines. There are 10 species of badger, which differ in size, habitat, and color.