1. Environment is defined as the total planetary inheritance and the totality of all resources.
It Involves:-
(1) Biotic Factors
(2) Abiotic Factors

2. Biotic factors
Birds
Animals
Plants
Forest

3. Abiotic factors
Air
Water
Land

4. Non-renewable Resources
The main function of the environment is that it supplies resources to us.
Resources
Renewable Resources
Non-renewable Resources

5. Renewable Resources
Renewable resources are those which can be used without the possibility of the resource becoming depleted or exhausted.
Trees in Forest
Fishes in the Sea

6. Non-renewable Resources
Resources, on the other hand, are those
which get exhausted with extraction
and use.
Fossil fuel

7. Problem of Environmental Crisis arises.
Resources
Environment
Users- Human Beings
Environment supplies us the useful resources as per our needs and regenerate them continuously.
But if,
Resource Extraction > Rate of Generation
Problem of Environmental Crisis arises.

8. Causes of Environmental Crisis
The Rising Population of the Developing countries.
The Affluent Consumption.
Increasing Production Standards.
The Greenhouse Effect.

9. Cost of Environmental Crisis
Huge amounts on technology and research to explore new resources.
Health costs of degraded environmental quality
Increased Financial Commitments
Decline in air and water quality
Medical cost against health diseases

10. It is clear that the opportunity costs of negative environmental impacts are high.
Hence, the environmental issues of waste generation and pollution have become critical today.