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Public Health
Public Health, environment temp. & water pollution, exam 2
| Question | Answer |
|---|---|
| temperature inversion | Las Vegas, Nevada, L.A. |
| temperature inversion causes | pollutants suspended in air, which cannot dissipate |
| valley of death | Cubatao, Brazil |
| Cubatao, Brazil | most polluted city in world |
| high incident of lung cancer | Cubatao, Brazil |
| #1 source of acid rain | sulfur containing coal |
| removes nutrients from soil | Acid rain |
| damage to ozone layer | CFCs, methane, nitrous oxide |
| increase in temp. of 2 degrees C would cause | 9 foot rise in ocean level |
| ozone gas | O3 |
| Ozone layer in presence of CFCs changes into | 3O2 - molecular O2 |
| 3O2 | cannot block ultraviolet light |
| 10 years | CFCs to rise from ground to stratosphere |
| 1 molecule of CFC | destroys many parts of ozone layer |
| skin cancer cases 1970 | 200,000 |
| skin cancer cases 2000 | 600,000 |
| sources of water pollution | Acid rain |
| sources of water pollution | crop dusting |
| sources of water pollution | sediments |
| sources of water pollution | acid water from mines |
| sources of water pollution | industrial wastes |
| sources of water pollution | barnyard wastes |
| sources of water pollution | nuclear reactor |
| sources of water pollution | fertilizer runoff |
| sources of water pollution | sewage treatment plant |
| sources of water pollution | oil pollution |
| phenomena of bio-accumulation | bio-magnification |
| DDT | stored in fatty tissue |
| water DDT concentrations (parts per million) | .000003 |
| planktonic algae DDT concentrations (parts per million) | .04 |
| Zooplankton DDT concentrations (parts per million) | .20 |
| small fish DDT concentrations (parts per million) | 2.0 |
| fish-eating birds DDT concentrations (parts per million) | 20.00 |
| DDT concentations from lowest to highest | increased 10 million times |
| Polychlorinated biphenyls (PCBs) causes | mutations, carcinogenic, birth defects |
| Polychlorinated biphenyls (PCBs) causes | still births, nervous disorders, liver disease |
| Tetrachlorodibenzo dioxin causes | mutations, carcinogenic, birth defects |
| Tetrachlorodibenzo dioxin causes | still births, nervous disorders, liver disease |
| hazardous chemicals in water | Polychlorinated biphenyls (PCBs) & Tetrachlorodibenzo dioxin |
| add __ of clorox bleach to make 1 liter of water pure | 2 ml |
| organic wastes | sewage, decaying plants, animal manures, wastes from food processing plants, oil refineries, leather, paper, textile plants |
| sythetic organic chemicals | herbicides, pesticides, detergents, plastics, wastes from industrial processes |
| heated water | reduces O2 solubility in water |
| heated water | alters habitats & kinds of organisms pressent. |
| heated water | encourage growth of some aquatic life |
| heated water | can decrease growth of desired organisms such as fish |
| organic wastes | increase biological O2 demand of water |
| synthetic organic chemicals | can cause birth defects, cancer, neurological damage, and other illness |
Created by:
JYarger
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