Now-a-days, there are many softwares and application, which can help to keep track of your fitness. Motion analysis is referred to a technique that helps in tracking the record of the human movement patterns.
The softwares and the applications based on the technique of motion analysis are referred as motion analysis systems. These application track the physical activity performed by a person and also guide abut what a person should do to remain healthy.
Sensory, interneuron, motor
There is no picture of the bird.
Storing nutrition and keeping warm, A good example would be walruses since they have no fur to keep warm
I might be incorrect, but from what I remember it should be particle size