Tundra ecosystem is cold and sunlight is short. Plants need sunglight and warmth in order to grow, thus plants in tundra are shorter and cloers to the ground since the ground is warmer than the air
It helps the urinary bladder stretch and hold urine. Then when full, it sends signals to the brain to make you feel the urge to pee.
Answer:
they created a genetic drift that caused them to create genocid