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Environmental science, Environmental health and sanitation.pptx
- 1. Environmental science, Environmental healthand sanitation Mrs Supriya Batwalkar Associate Professor
- 2. According to Boring,‘A person’s environment consists of the sum total of the stimulation which he receives from his conception until his death.’ Indicating that environment comprises various types of forces such as physical, intellectual, mental, economical, political, cultural, social, moral and emotional. Douglas and Holland defined that ‘The term environment is used to describe, in aggregate, all the external forces, influences and conditions, which affect the life, nature, behavior and the growth, development and maturity of living organisms’. DEFINITIONS OF ENVIRONMENT
- 4. Environmental science,interdisciplinary academic field that draws on ecology, geology, meteorology, biology, chemistry, engineering, and physics to study environmental problems and human impacts on the environment. Environmental science is a quantitative discipline with both applied and theoretical aspects and has been influential in informing the policies of governments around the world. Environmental science
- 5. Environmental healthis a branch of public health that monitors the relationship between human health and the environment, examining aspects of both our natural and human-made environment and their effect on human wellbeing. Environmental health
- 6. Natural resourcesrefer to those resources which exist on the planet, independent of the activities and actions of humans. Some common examples of natural resources include sunlight, water, soil, stone, plants, fossil fuels, etc. Natural resources
- 7. Natural resourcesare naturally occurring materials that are useful to man or could be useful under conceivable technological, economic or social circumstances or supplies drawn from the earth, supplies such as food, building and clothing materials, fertilizers, metals, water and geothermal power. For a long time, natural resources were the domain of the natural sciences. Natural resources
- 8. Based on theavailability are two types of natural resources: Renewable: resources that are available in infinite quantity and can be used repeatedly are called renewable resources. Example: Forest, wind, water, etc. Non-Renewable: resources that are limited in abundance due to their non-renewable nature and whose availability may run out in the future are called non-renewable resources. Examples include fossil fuels, minerals, etc. What are the Different Types of Natural Resources?
- 10. Renewable resourcesare resources that are reestablished or renewed rapidly in a limited timeframe, such as wind, water, air, etc. They can be genuinely recuperated or supplanted after usage. Creatures can likewise be classified as sustainable resources since they can be raised and reared to duplicate posterity to substitute the more seasoned creatures. The sustainable unrefined components that come from living things in particular creatures and trees and are named natural inexhaustible resources while those that come from non- living things, for example, sun, water, and wind are named inorganic sustainable resources. Renewable resources
- 11. Non-renewable resourcesare restricted resources. In the event that these resources are once finished, they won’t be supplanted again. These are the ones that can’t just be subbed or recuperated once they have been used or obliterated. Some creatures for the most part the jeopardized species are likewise viewed as non-sustainable in light of the fact that they are at the edge of annihilation. The non-inexhaustible materials that come from living things, for example, petroleum products are known as natural non-sustainable resources while those that come from non-living things like rocks, what’s more, soil are alluded to as inorganic non-inexhaustible resources. Non-renewable resources
- 12. Difference between Renewableand Non- Renewable Resources Renewable resource Non-renewable resource It can be renewed as it is available in infinite quantity Sustainable in nature Low cost and environment- friendly Replenish quickly Once completely consumed, it cannot be renewed due to limited stock Exhaustible in nature High cost and less environment-friendly Replenish slowly or do not replenish naturally at all
- 29. There aremany supporting systems like Forests, oceans, grasslands, deserts which have structural components and functions. They all have living organisms interacting with their surroundings exchanging matter and energy. The word Ecology was coined by Earnest Haeckel in 1869 from Greek Words: Oikos (Home) + Logos(study) So ecology is study of organisms in their natural home interacting with the biotic and abiotic components (Surroundings) Concept of Ecosystem