Na/K concentration in and out of the cell at the homeostatic level. It does this by pumping sodium and potassium ions in and out when it's needed of it in order to maintain the concentration of both ions stable across time.
Johannes Gutenberg invented the printing press
Spanish intended to transform the island of the Caribbean into lands that are controlled by another nation
Answer:
they had to pick cotton, bare hands and blisters everywhere, and had to do it for free when it was worth billions of dollars. They had to escape with no shoes and had to stand, walk,and run in the cold. Lastly, they had to travel miles away with no car, just legs, feet, arms, and hands, and had no blanket or anything to protect them.
According to Perry Rogers, one reason the Chinese were unsuccessful in halting the opium <span>trade was because the country had come to depend on it for revenue. </span>