The growing realization of environmental concerns culminated in the establishment of world commission on Environment and Development by the UNs General Assembly in 1983. The commission headed by brundtland submitled “our common future” in 1987
. This report was a turning point in the history of human endeavor for safeguarding the environment. The commission has focused the attention among others, towards the rapid growth of population in many parts of the world the population is growing at rates that cannot be sustained by available environmental resources and pleaded for achieving sustainable development as the objective for human civilization.
The global warning, depletion of ozone layer and loss of bio-diversity are some of the immediate threats to environment. The average global temperature during the 1980s exceeded that of any other decade since reliable temperature recording began a century ago and 1990 was the warmest year on record. The elevated concentration of greenhouse gases is responsible for rise in temperature. This could lead to complex climatic changes including the rise in sea level. The available information shows that the concentration of some of greenhouse gases such as carbon dioxide: methane and Nitrous oxide have considerably increased since the beginning of industrial revolution carbon dioxide is the most important greenhouse gas which contributes 60-65 percent in total heat trapping followed by methane. All of the biotic and a biotic factors that act on an organism, population, or ecological community and influence its survival and development. Biotic factor include the organisms themselves, their food, and their interactions. A biotic factors include such items as sunlight, soil, air, water, climate, and pollution. Organisms respond to change in their environment by evolutionary adaptations in form and behavior. Living beings needed different type of resources for their growth and development. All the resources around human beings are the necessary parts of environment. Soil, forest, water, wildlife etc. natural environment is of crucial importance for social and economic life. We use the living world as:
. This report was a turning point in the history of human endeavor for safeguarding the environment. The commission has focused the attention among others, towards the rapid growth of population in many parts of the world the population is growing at rates that cannot be sustained by available environmental resources and pleaded for achieving sustainable development as the objective for human civilization.
The global warning, depletion of ozone layer and loss of bio-diversity are some of the immediate threats to environment. The average global temperature during the 1980s exceeded that of any other decade since reliable temperature recording began a century ago and 1990 was the warmest year on record. The elevated concentration of greenhouse gases is responsible for rise in temperature. This could lead to complex climatic changes including the rise in sea level. The available information shows that the concentration of some of greenhouse gases such as carbon dioxide: methane and Nitrous oxide have considerably increased since the beginning of industrial revolution carbon dioxide is the most important greenhouse gas which contributes 60-65 percent in total heat trapping followed by methane. All of the biotic and a biotic factors that act on an organism, population, or ecological community and influence its survival and development. Biotic factor include the organisms themselves, their food, and their interactions. A biotic factors include such items as sunlight, soil, air, water, climate, and pollution. Organisms respond to change in their environment by evolutionary adaptations in form and behavior. Living beings needed different type of resources for their growth and development. All the resources around human beings are the necessary parts of environment. Soil, forest, water, wildlife etc. natural environment is of crucial importance for social and economic life. We use the living world as:
- A resource for food supply
- An energy source
- A source for recreation
- A major source of medicines
- Natural resources for industrial products
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