Why is nicotine used in many insecticides? Why is transpiration necessary in plants? Why don't conifers lose their leaves? Why are pesticides used in intensive farming? Why do conifers have needle like leaves? Why are autotrophs important in the food web?
Why do people smoke?One reason is that people become addicted(成瘾) to cigarettes.The addictive substance(物质) in cigarettes is nicotine(尼古丁).When people smoke,the nicotine goes right into the blood stream and makes people feel comfortable.A smoker's body gets used to the nicotine,and if...
One reason is that people become addicted(成瘾) to cigarettes.The addictive substance(物质)in cigarettes is nicotine(尼古丁).When people smoke,the nicotine goes right into the blood stream and makes people feel comfortable.A smoker's body gets used to the nicotine,and if he stops smoking,he ...
Onereasonisthatpeoplebecomeaddicted (成瘾) tocigarettes. Theaddictivesubstance (物质) incigarettesisnicotine (尼古丁). Whenpeoplesmoke, thenicotinegoesrightintothebloodstreamandmakespeoplefeelcomfortable. A smoker'sbodygetsusedtothenicotine, andifhestopssmoking, hefeelsnervous. Manysmokerstrytostopsmokingbut...
One reason is that people become addicted(上瘾) to cigarettes. The addictive thing in cigarettes is nicotine. When people smoke, the nicotine goes right into the blood stream and makes people feel comfortable. A smoker\s body gets used to the nicotine, and if he stops smoking, he feels ...
One reason is that people become addicted(成瘾)to cigarettes.The addictive substance(物质)in cigarettes is nicotine(尼古丁).When people smoke, the nicotine goes right into the blood stream and makes people feel comfortable.A smoker's body gets used to the nicotine, and if he stops smoking, ...
One reason is that people become addicted(成瘾) to cigarettes. The ad-dictive substance(物质) in cigarettes is nicotine(尼古丁). When people smoke, the nicotine goesright into the blood stream and makes people feel 1 . A smoker's body gets 2 to the nico-tine, and 3 he stops smoking, ...
One reason is thatpeople become addicted to(对…有瘾) cigarettes.The addictive substance in cigarettes is nicotine.When people smoke, the nicotine goes right into theblood stream and makes people relaxed. A smoker'sbody becomes used to the nicotine and if he stopssmoking he feels nervous. ...
used e-cigarettes. E-cigarettes don't fill the lungs with harmful smoke,but that doesn't make them a healthy alternative to regular cigarettes.When you use an e-cigarette,you're still putting nicotine which is absorbed through your lungs into your body system.In addition t...
“Many people, especially youth, erroneously assume that vaping is safe, but even nicotine-free vaping mixtures contain many compounds that can potentially damage the lungs,” said senior author Kambez H. Benam, D.Phil., associate professor in the Division of Pulmonary, Allergy, and Critical Ca...