STEM, then, is a specific program designed for a specific purposeâto integrate and apply knowledge of math and science in order to create technologies and solutions for real-world problems, using an engineering design approach. Itâs no surprise that STEM programs need to maintain an intense focus.
Excise definition, an internal tax or duty on certain commodities, as liquor or tobacco, levied on their manufacture, sale, or consumption within the country. See more. Dictionary.com
ExcretionExcretion is the process whereby an organism eliminates metabolic wastes and unwanted chemicals from its system. Metabolism is the sum total of all the chemical reactions occurring in the cells and body. Some products of these metabolic reactions are toxic and so must be processed or eliminated from the body.