Health, 24.08.2019 01:30 volocibel

It is best to say that most human sources of air pollution result from?
a. forestry management
b. fuel burning
c. heating devices
d. vehicle exhaust

Answers: 1

Show answers

Answers

The answer is letter B.

Fuel burning is one of the major sources of air pollutants in the earth's atmosphere. Through industrialization, the growth of major cities requires technologies that use manufacturing and trade as their major economic yardstick. Fuels are burnt almost everywhere, in cars, motorcycles, factories, and houses. It is no wonder that the climate of the Earth has changed drastically for the past years because of these innovations we have that we consider as "growth." These fossil fuels that burn off release carbon dioxide and other harmful toxins in the air causing major pollution to occur all over the world.

Answer from: hayleneolide

b. fuel burning

Explanation:

Answer from: Quest

Your answer should be c

Answer from: Quest

however, coronary heart disease , or chd, is actually a result of coronary artery disease, or cad, said edward a. fisher, m.d., ph.d., m.p.h., an american heart association volunteer who is the leon h. charney professor of cardiovascular medicine and also of the marc and ruti bell vascular biology and disease program at the nyu school of medicine.

with coronary artery disease, plaque first grows within the walls of the coronary arteries until the blood flow to the heart’s muscle is limited. view an illustration of coronary arteries. this is also called ischemia. it may be chronic, narrowing of the coronary artery over time and limiting of the blood supply to part of the muscle. or it can be acute, resulting from a sudden rupture of a plaque and formation of a thrombus or blood clot.

the traditional risk factors for coronary artery disease are high ldl cholesterol, low hdl cholesterol, high blood pressure, family history, diabetes, smoking, being post-menopausal for women and being older than 45 for men, according to fisher. obesity may also be a risk factor.

“coronary artery disease begins in childhood, so that by the teenage years, there is evidence that plaques that will stay with us for life are formed in most people,” said fisher, who is former editor of the american heart association journal, atvb. “preventive measures instituted early are thought to have greater lifetime benefits. healthy lifestyles will delay the progression of cad, and there is hope that cad can be regressed before it causes chd.”

living a healthy lifestyle that incorporates good nutrition, weight management and getting plenty of physical activity can play a big role in avoiding cad.

“coronary artery disease is preventable,” agreed johnny lee, m.d., president of new york heart associates, and an american heart association volunteer. “typical warning signs are chest pain, shortness of breath, palpitations and even fatigue.” if you feel any of these symptoms, don’t delay — call 9-1-1.