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.
They have been found in Florida, North Carolina, California and Massachusetts. Northern snakeheads are a predatory fish and will compete with other fish species for forage and habitat. It is too early to say what impact the presence of snakeheads will have on other species already in Meadow Lake and other waters.hey have been found in Florida, North Carolina, California and Massachusetts. Northern snakeheads are a predatory fish and will compete with other fish species for forage and habitat. It is too early to say what impact the presence of snakeheads will have on other species already in Meadow Lake and other waters.