Environment

& Life

Environment: the total of our surroundings

• All the things around us with which we interact:• Living things

• Animals, plants, forests, fungi, etc.• Nonliving things

• Continents, oceans, clouds, soil, rocks• Our built environment

• Buildings, human-created living centers• Social relationships and institutions

Affects on the Environment

• Increased pollution• Increased use of fuel• As humans travel globally they carry and

spread disease from one area of the world to another.

• Ecosystems destroyed to build runways.• Affects of pesticides on organisms other than

the crops sprayed.

Pollution – Definition

Any undesirable change in physical , chemical or biological characteristics of air , land , water

Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms.

Pollution can take the form of chemical substances or energy, such as noise, heat, or light. ...

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Solid Waste Air

Water

Pollution

What kinds of pollution are there?

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How Why

A cloud of smoke from the exhaust of a vehicle

Increasing traffic

Smoke from a factory chimney

Growing cities

Eruption of a volcano

Rapid economic development

Cigarette smoke Industrialization

Burning leaves Apathetic people

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Effects of Air Pollution

• Health problems• Damage to the environment• Damage to property• Thinning of the protective ozone layer of the atmosphere which is leading to climate changes

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Water PollutionWater Pollution How

• Toxic substances dissolve in water or gets deposited on the bed.

• Toxic substances enter lakes, rivers, streams, etc.

• Pollutants go down into the ground.

Sources• City sewage• Industrial waste• Agricultural run-off

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Effects of Water Pollution

• Devastating to people and animals, fish, and birds.

• Unsuitable for drinking, recreation, agriculture, and industry.

• Destroys water life.

                                                                        

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Solid Waste

Types of waste• Household waste• Industrial waste• Biomedical or hospital

waste

Why• Population increases• Increased plastics

products• Changes in lifestyle• Landfills not well

equipped to protect against contamination

Ozone (O3) Made up of three oxygen atoms Occurs naturally as a layer in the

stratosphere The layer is thinnest around the equator and

the concentration increases towards the poles

Skin Cancer Cataracts and Other Eye Damages Suppression of Immunity

Impacts on other animals Reduces plankton population Reduces penguin population Reduces the percentage of hatching of

frog eggs

What is Fertilizer…

• Any natural or manufactured material that contains at least 5% of one or more of the three primary nutrients - nitrogen (N), phosphorous (P), or potassium (K) - can be considered a fertilizer.

Water QualityEutrophicationBlue Baby SyndromeSoil AcidificationPersistent organic pollutantsHeavy Metal AccumulationRadioactive element accumulationAtmosphere

NEGATIVE IMPACT ON ENVIRONMENT

Technology vs. EnvironmentTechnology

– Study of our human-made world

– Deals with “what can be”

Environment– Study of our natural

world– Deals with “what is”

Energy and Power TechnologyEnergy is the ability or capacity to do work.

Examples:Chemical Energy Gasoline

Mechanical Energy MotionThermal Energy Steam

Electrical Energy ElectricityRadiant Energy Light

Energy and Power TechnologyPower is the rate at which energy is

transformed from one form to another.Examples:

Electrical power – provides light and operates motorsMechanical power – moves automobiles, trains, and

airplanesFluid power – uses fluids to produce motionHydraulic – uses a liquidPneumatic – uses a gas

Impacts of Energy and Power Technology

POSITIVE IMPACTS NEGATIVE IMPACTS

Without energy and power, most technologies would not exist or work

Overuse of nonrenewable resources

Production TechnologyProduction Technology is the

manufacturing of physical goods on an assembly line and the construction of structures on a job site.

Manufacturing changes natural or synthetic materials into usable products.Examples: Clothing, vehicles, food

Construction Technology builds structures that support loads and protect us from the environment.Examples: House, bridge, roads

Production Technology

Impacts of Production TechnologyPOSITIVE IMPACTS NEGATIVE IMPACTS

MANUFACTURING – MANUFACTURING –

CONSTRUCTION – CONSTRUCTION –

New products help to make our life easier and increase leisure time

Many industries use materials that can harm the environment

Provides shelter, improves roads, creates employment opportunities

Noise and debris, traffic problems, accidents and injuries

Bio-related and Agricultural Technology

Biotechnology transforms living things into products or new forms of life.

Examples:Genetic engineering, bionics

Agricultural Technology produces plants and animals for food, fiber, and fuel.Examples:

Irrigation, food preservation, weed and insect control

Both deal with living things:Plants, animals, and people

DNA Replication image from the Human Genome Project

Impacts of Bio-Related Technology

POSITIVE IMPACTS

NEGATIVE IMPACTS

HEALTH – Improves quality of life, vitamins, vaccines, medications

HEALTH – Side effects of some medications – nausea, shortness of breath, etc.

What are the

solutions to all these

problems?

Let Us Together Build a World In Which Every Person Has

Hygienic Environment

And Lives in

SanitationSafe Adequate water

HEALTHY ENVIRONMENT

Sustainable Development Solid waste

Management

World Conservation

strategy

EnvironmentalLaws

Hazards mitigation

Energyconservation

Rain water HarvestingBiodiversity

conservation

Pollution control

Water Resources