Human population and environment .pptx

Human population & environment
Reasons for population growth
Human rights
Environment
Effects of environment
Air pollution
Water pollution
Noise pollution

1. HUMAN POPULATION AND ENVIRONMENT

2. HUMAN POPULATION Over population will definitely cause natural resources deplection and environment degradation Every second 4or 5 children are born somewhere on the earth and 2 people die. Population is the number of people living within a particular region, country or geographical area. Population growth is the increase in the size of the population when the birth rate increases and the death rate decreases in the population living in the same area.

3. Reasons for the population growth : Science and technological advancement has increased the expectancy of human . People started living with good sanitation food and medical facilities increase in population exponentially Therefore, in developing countries the population increase is at a rate of 3.4% per year

4. Population explosion Population explosion means the tremendous increase in the number of people It is a known fact that the increase of population is playing vital role of all environmental damage . Most of our natural resources are under threat because ofthe population growth Population explosion increase disease, economic inequity and environmental abuse .

5. Reason for population explosion: Increase in birth rate in developed countries due to illiteracy . 35 per cent of the population of India is illiterate Invention of modern medical facilities reduces mortality rate . HUMAN RIGHTS Human rights day is celebrated on 10th December of every year. Every individuals of India has the following rights Human rights to Freedom

6. Human rights to Property Human rights to Freedom of religion Human rights to Culture and civilization Human rights to Education Human rights to Equality Human rights to find Solution to exploitation Human rights to Food and shelter Human rights to health Human rights to employment Human rights to social security Human rights to form trades and companies

7. Environment Each organism lives with a number of biotic and abiotic factors and the conditions influencing them externally are called environment Types of environment Natural environment Cultural environment Natural environment It also called natural, geographical and physical environment it also built by nature and contains all these elements that nature has give to man

8. Cultural environment Environment that includes man made elements is called cultural environment human is the author of cultural environment which includes race, religion, education government and includes populatiom They can be divided into 3 parts namely physica l biological Other factors

9. Effects of environment digradation Air pollution :- Air pollution refers to any physical, chemical or biological change in the air. It is the contamination of air by harmful gases, dust and smoke which affects plants, animals and humans drastically Causes of Air Ponllutio Burning of Fossil Fuels:- The combustion of fossil fuels emits a large amount of sulphur dioxide. Carbon monoxide released by incomplete combustion of fossil fuels also results in air pollution

10. Automobiles :- The gases emitted from vehicles such as jeeps, trucks, cars, buses, etc. pollute the environment. These are the major sources of greenhouse gases and also result in diseases among individuals Agricultural Activities:- Ammonia is one of the most hazardous gases emitted during agricultural activities. The insecticides, pesticides and fertilisers emit harmful chemicals in the atmosphere and contaminate it Factories and Industries:- Factories and industries are the main source of carbon monoxide, organic compounds, hydrocarbons and chemicals. These are released into the air, degrading its quality

11. Mining Activitie :- sIn the mining process, the minerals below the earth are extracted using large pieces of equipment. The dust and chemicals released during the process not only pollute the air, but also deteriorate the health of the workers and people living in the nearby areas Domestic Sources:- The household cleaning products and paints contain toxic chemicals that are released in the air. The smell from the newly painted walls is the smell of the chemicals present in the paints. It not only pollutes the air but also affects breathing

12. AIR POLLUTION

13. Water Pollution:- Water pollution occurs when harmful substances—often chemicals or microorganisms—contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment On human health:- To put it bluntly: Water pollution kills. In fact, it caused 1.8 million deaths in 2015, according to a study published in The Lancet. Contaminated water can also make you ill. Every year, unsafe water sickens about 1 billion people. And low-income communities are disproportionately at risk because their homes are often closest to the most polluting industries.Waterborne pathogens, What Are the Effects of Water Pollution?

14. in the form of disease-causing bacteria and viruses from human and animal waste, are a major cause of illness from contaminated drinking water. Diseases spread by unsafe water include cholera, giardia, and typhoid. Even in wealthy nations, accidental or illegal releases from sewage treatment facilities, as well as runoff from farms and urban areas, contribute harmful pathogens to waterways. Thousands of people across the United States are sickened every year by Legionnaires’ disease (a severe form of pneumonia contracted from water sources like cooling towers and piped water), with cases cropping up from California’s Disneyland to Manhattan’s Upper East Side

15. On the environment :-In order to thrive, healthy ecosystems rely on a complex web of animals, plants, bacteria, and fungi—all of which interact, directly or indirectly, with each other. Harm to any of these organisms can create a chain effect, imperiling entire aquatic environments.When water pollution causes an algal bloom in a lake or marine environment, the proliferation of newly introduced nutrients stimulates plant and algae growth, which in turn reduces oxygen levels in the water. This dearth of oxygen, known as eutrophication, suffocates plants and animals and can create “dead zones,” where waters are essentially devoid of life. In certain cases, these harmful algal blooms can also produce neurotoxins that affect wildlife, from whales to sea turtles.Chemicals and heavy metals from industrial and municipal wastewater contaminate waterways as well.

16. WATER POLLUTION

17. These contaminants are toxic to aquatic life—most often reducing an organism’s life span and ability to reproduce—and make their way up the food chain as predator eats prey. That’s how tuna and other big fish accumulate high quantities of toxins, such as mercury. Noise Pollution – Unwanted noise is a cause of noise pollution. Reasons for urbanization and technological development have led to noise pollution, which has directly affected human health. Noise pollution leads to the creation of diseases such as mental imbalance, as well as damage to health by causing diseases such as high blood pressure, intestinal ulcer, loss of eye sight, headache, fatigue, tension, stiffness etc .

18. NOISE POLLUTION