When an object rests on a surface, such as a table, for example, the downward force it applies to the surface is counteracted by an equal but upwards force, or reaction, applied by the surface. See more at Newton's laws of motion. A response to a stimulus, such as a reflex.
Background. The northern snakehead fish (Channa argus) has been identified as an invasive aquatic fish across the country. Snakehead fish got their name because of their long, cylindrical body plan and large scales on their head that give them a snake-like appearance.
Minnesota Aquatic Invasive Species Research Center (MAISRC) Common carp are one of the worldâs most widely introduced and invasive species of fish. Currently, they dominate the fish biomass of many shallow lakes, rivers, and wetlands in North America and around the world, including many lakes in central and southern Minnesota.