In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)
An animal can respond in negative ways such as: biting, scratching, urinating, whining, restlessness, snippy, or getting sick.
The Average Cow
of milk per year, that's nearly 2,500 gallons a year! On a daily basis, most cows average about 70 lbs. of milk per day, or about 8 gallons per day. 8 gallons is about 128 glasses of milk per day.
