The most prevalent environmental threat to human populations caused by landfills is the contamination of surface and ground water. So, most modern landfills in the U. S. are designed to protect against hazardous chemicals escaping into the surrounding soil. What technology makes these protection systems possible?

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

they kick it to the curb.

explanation:

that current was nasty.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.