shows the interaction among many different food chains in a single ecosystem. food chain. the way in which the organisms in an ecosystem interact with one another according to what they eat, eating the organisms below it. symbiosis.
Equitation is the art or practice of horse riding or horsemanship. More specifically, equitation may refer to a rider's position while mounted, and encompasses a rider's ability to ride correctly and with effective aids. In horse show competition, the rider, rather than the horse is evaluated.
Saddle Joint. A saddle joint is a synovial joint where one of the bones forming the joint is shaped like a saddle with the other bone resting on it like a rider on a horse. Saddle joints provide stability to the bones while providing more flexibility than a hinge or gliding joint. The bone sitting on the saddle can move in an oval shape relative to the other bone, similar to a condyloid joint.