By physical factor we mean, the surface of the earth, climate, rainfall, rivers, mountains, forests, animal life, minerals and such other geographical factors. They have great influence over the human society.
Here are few ways to reduce the disastrous effects of Disaster by properly forecasting and channelizing warnings within time. Predictability of a disaster is the key to understand its nature and thereby to assess the chances of its occurrence and the fury of the event. Predictability is an attribute really applicable to natural disasters.
Bacteria are also beneficial to the human beings in many ways in spite of their many harmful effects. They have a great role in agriculture. Bacteria help in decaying of organic substances, increase the fertility of soil, help in ammonification, nitrification and fixation of nitrogen.
Soil erosion is one of the most destructive phenomena of land degradation. There is loss of not only water and plant nutrients but ultimately soil itself is lost, which, in turn, affects crop productivity.
Improper disposal of hazardous waste causes adverse effects on human health and the environment. The normal practices of waste disposal such as insanitary open dump, land filling, discharge in water courses, or open-pit burning will need modification when dealing with hazardous wastes.
It has long been known that air pollution can affect the local climate, particularly the rainfall. In the recent years there has been considerable debate about the potential impact of air pollution on global climate. Let us examine some of these climatic effects of air pollution.
Some of the dangerous pollutants are : 1. Carbon Monoxide 2. Sulphur Dioxide 3. Chlorofluorocarbons 4. Smoke 5. Dust. Prevents blood from carrying oxygen; causes headaches and dizziness, and even death if inhaled in large doses.
Epidemics usually affect large number of individuals and can lead to complications including disabilities and death. There is always a possibility of existence of sufficient number of disease carriers who may favor the resurgence and spread of disease. On seeing the suffering and deaths especially within close relatives, psychological effects are also common during epidemics.
In considering the effects and impacts of landslides and snow avalanches, the following special features of these hazards should be kept in mind.
The following are the typical effects of industrial and technological disasters: 1. Injuries and death. 2. Destruction of buildings and other property. 2. Destruction of buildings and other property.