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
Excretion is a biological process by which metabolic waste products and toxic materials are removed from the body of an organism. It's an essential part in life, because it gets rid of all the poisons and etc.