Grasslands and the tundra are both home to large herds of grazing animals. what makes caribou different from the herbivores of warmer climates?

a. caribou are migratory and only spend summers in the tundra.

b. caribou have adapted to the lack of vegetation by eating animals as well.

c. caribou have a thicker coat of fur and wider hooves.

d. caribou have larger ears to allow excess heat to escape.