The primary germ layers (endoderm, mesoderm, and ectoderm) are formed and organized in their proper locations during gastrulation. Endoderm, the most internal germ layer, forms the lining of the gut and other internal organs.
Current Sales Tax Rates for Marion County. Effective July 1, 2015, the State sales tax rate changes to 6.50%. New Sales Tax Rates for Marion County (effective 07/01/15)
1 The Finder â This online tool can help determine the sales tax rate in effect for any address in Ohio.  The sales and use tax rate will decrease from 7.25 % to 6.75 % effective October 1, 2016 for Clinton County. 2016 rate changes. 1st Quarter (effective January 1, 2016 - March 31, 2016): Rates listed by county and transit authority.