Although the terms reactant and reagent are often used interchangeably, a reactant is more specifically a substance that is consumed in the course of a chemical reaction. Solvents, although they are involved in the reaction, are usually not referred to as reactants.
Animals that live in water, usually called aquatic animals, include fish, cetaceans, certain types of turtles and other reptiles, and amphibians. There are also a number of semiaquatic animals, such as alligators, hippopotamuses and penguins, that depend on and live in water most of the time. Continue Reading.
exists and is an alternate of . Krill eat small animals called zooplankton. Zooplankton in turn eat phytoplankton, the 'grass of the sea', which are extremely small plants that are are nurtured by minerals that come up in cold water from the ocean floor toward the upper levels of water in the ocean.