Answer:
Bison have special stomachs to digest grass.
Step-by-step explanation:
Bison are herbivores and their primary food source is grass. To digest the tough and fibrous plant material, they have evolved a specialized stomach with four compartments, collectively known as the ruminant stomach. This allows them to break down the cellulose in grass using a process called fermentation, which is aided by microbes in their stomach. The first compartment of their stomach, the rumen, serves as a fermentation chamber where the grass is broken down into smaller particles before being regurgitated and chewed again, in a process known as "chewing the cud".
This adaptation allows bison to extract nutrients and energy from the tough, low-quality grasses that grow in the grasslands. The ability to digest grass is a key adaptation that has allowed bison to thrive in grassland habitats, which are characterized by vast expanses of grasses and few trees. Other adaptations of bison include a thick fur coat for insulation during the cold winters, a muscular build that allows them to travel long distances in search of food and water, and a strong sense of smell and hearing that helps them detect predators and avoid danger. However, bison do not run at speeds of up to 70 mph and do not dig and live in tunnels for protection.