The evolution of the species trough thousands of years we can just observe or compare them by fossils. Observation of a specie through 20 or 30 years, will just give us a general idea of their behavior in an ecosystem and some adaptations to its surroundings.
A toboggan is a simple sled traditionally used by children. It is well adapted to sliding down open slopes, where its large surface rides easily on loose, fluffy snow.
