by Amy Martin Us two-legged mammals, along with horses and bears, all have bodies covered with hair. To cool we have sweat glands called eccrine, pumps in our skin that dispense salty brine. But […]
by Amy Martin Us two-legged mammals, along with horses and bears, all have bodies covered with hair. To cool we have sweat glands called eccrine, pumps in our skin that dispense salty brine. But […]