To comply with the federal No Child Left Behind (NCLB) Act of 2001, Mississippi administers standardized tests to students beginning in 3rd grade through high school.
autotrophs An autotroph (from the Greek autos = self and trophe = nutrition) is an organism that produces organic compounds from carbon dioxide as a carbon source, using either light or reactions of inorganic chemical compounds, as a source of energy. An autotroph is known as a producer in a food chain. Plants and other organisms that carry out photosynthesis are phototrophs (or photoautotrophs). Bacteria that utilize the oxidation of inorganic compounds such as hydrogen sulfide, ammonium or ferrous iron as an energy source are chemoautotrophs. Aloha. Source(s): http://www.amnh.org/nationalcenter/exped...
From Wikipedia. Autotroph. An autotroph, also called a producer, is an organism that produces complex organic compound s (such as carbohydrate s, fat s, and protein s) from simple inorganic molecules using energy from light (by photosynthesis) or inorganic chemical reactions (chemosynthesis).hus, heterotrophs animals, fungi, as well as most bacteria and protozoa depend on autotrophs for both energy and raw materials to make complex organic molecules. This mechanism is called primary production in the sea. Heterotrophs obtain energy by breaking down organic molecules obtained in food.