ERD vs DFD ERD and DFD are data presentation models that help in identifying the flow of data as well as inputs and outputs. They are important as they enable Home
HEALTH EFFECTS. People with heart or lung diseases, older adults and children are most likely to be affected by particle pollution exposure. However, even if you are healthy, you may feel temporary symptoms if you are exposed to high levels of particle pollution.
Emissions of many air pollutants have been shown to have variety of negative effects on public health and the natural environment. Hydrocarbons - A class of burned or partially burned fuel, hydrocarbons are toxins. Hydrocarbons are a major contributor to smog, which can be a major problem in urban areas.