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.

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the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.