1) D chromosomes
2) B a double helix
3)A chromosomes are made of DNA
4)A genes
Answer:
Ok I need more of the question more info.
Explanation:
<u>Smoking</u> causes respiratory disorders such as bronchitis, pneumonia and lung cancer.
<u>Explanation:</u>
Respiratory disorders such as bronchitis, pneumonia and lung cancers are caused by smoking tobacco, air pollution and by infection. Smoking is the predominant cause of this respiratory order it also raises the level of air pollution which becomes hazardous to all the living organisms.
Infection in the lungs which is identified as pus in air sacs and found as inflamed lungs is usually life threatening. Severe shortness of breathe called the bronchitis is due to airborne chemicals.
<span>can be desalinated and used for irrigation</span>
False. parasites infect and feed
