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.
Split and merge into it. Answered by The Community. Making the world better, one answer at a time. The northern snakehead fish came from China, Korea, and Russia. and now is very common in the USA as a non-native species.plit and merge into it. Answered by The Community. Making the world better, one answer at a time. The northern snakehead fish came from China, Korea, and Russia. and now is very common in the USA as a non-native species.