<span>Drugs of abuse testing is used to screen for and confirm the presence of several drugs in a person's sample, such as urine, blood or hair. Drug testing is used so that a person may receive appropriate medical treatment or be screened for or monitored for illegal drug use.</span>
It may be a lake, a marsh, a spring or a glacier. This is where the stream starts. The source is the farthest point of the river stream from its estuary or its confluence with another river or stream. ... The farthest stream is called the headstream or headwater.
Answer:
Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Explanation:
hope this Helps
Im not really sure , but it might have something to do with polar chemical compound <span />
