Several reasons:
From a psychological point of view, a person who takes nicotine has been conditioned to associate nicotine with pleasure. It’s similar to how people associate junk food with good taste and how it’s difficult to give up junk food completely.
However, this by itself cannot explain why nicotine is addictive. Biologically, nicotine mimics dopamine, a neurotransmitter that (among other things) makes people feel good. After a person takes nicotine, it’s as if their dopamine levels have suddenly become too high; to compensate, the brain starts producing less dopamine, and once the nicotine breaks down, dopamine levels will drop. When dopamine levels drop, bad things happen (depression, headaches, lack of coordination, and so on), and the person will need some external source of dopamine. In most cases, that external source is nicotine, and after taking nicotine to counter the negative effects of low dopamine levels, the cycle continues. This leads to physical dependence on the drug and makes quitting nearly impossible. Should the person attempt to quit, he/she would suffer withdrawal symptoms for a long time and this aversion to withdrawal symptoms makes it extremely hard to quit.
Women who drink alcohol during pregnancy can give birth to babies with a disease called <span>FASD which can give babies small eyes, a small head, smooth part between the nose and the lip, and etc. </span>
Answer:
Yes
Explanation:
In order to know what codes to assign, you need to know what procedure was done, or what part of the body that are you billing for. Example. To know the difference between a colonoscopy and an endoscopy you need some knowledge of Anatomy and medical terminology.
The correct answer is A.) Stronger Bones
Answer:
true
Explanation:
chromosomes are thread-like structures in which DNA is tightly packed within the nucleus. the DNA is usually tightly coiled around a protein that supports the structure which are called DNA and histone. when the cell is not dividing, the chromosome is not visible under the microscope, but during cell division the DNA that makes up the chromosome becomes tightly packed, then the chromosome becomes visible under the microscope. therefore chromosomes are composed of DNA.
