ent Spring I. iscuss Issues On Environment Noise pollution Human created noise harmful to health or welfare. Transportation vehicles are the worst offenders with aircraft trucks buses automobiles, and motorcycles all producing excessive noise. Apart from hearing loss noise can cause lack of sleep, irritability, heartburn, indigestion, high blood pressure and possibly heart disease. Noise-induced stress creates severe tension in daily living and contributes to mental illness W B T LE To be continued on the next page
W B T L E Lesson 11 – Silent Spring To be continued on the next page. Noise pollution Human created noise harmful to health or welfare. Transportation vehicles are the worst offenders, with aircraft, trucks, buses, automobiles, and motorcycles all producing excessive noise. Apart from hearing loss, noise can cause lack of sleep, irritability, heartburn, indigestion, high blood pressure, and possibly heart disease. Noise-induced stress creates severe tension in daily living and contributes to mental illness. I. Discuss Issues On Environment
ent Spring I. iscuss Issues On Environment 3. What do you know about chemical pesticides? Pesticides are substances which kill or deter unwanted pests, such as insects. Chemical pesticides are usually contact, stomach, or fumigant poisons. Contact poisons may have immediate or delayed effects after physica contact with a pest W B T LE To be continued on the next page
W B T L E Lesson 11 – Silent Spring To be continued on the next page. 3. What do you know about chemical pesticides? Pesticides are substances which kill or deter unwanted pests, such as insects. Chemical pesticides are usually contact, stomach, or fumigant poisons. Contact poisons may have immediate or delayed effects after physical contact with a pest. I. Discuss Issues On Environment