The document discusses various environmental challenges and their causes. It covers topics like deforestation, air pollution, land pollution, greenhouse effect, sustainable development, population growth, and the impacts of population growth. It provides examples and definitions for key terms. Population growth contributes to issues like increased demand for resources, climate change, and degradation of the environment over coming decades. The rapid growth affects sustainability objectives and causes problems related to resources, pollution, migrations, and conflicts.

1. Presentation
Sir: Amir Khan
G R O U P M E M B E R S
Laiba
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Hoorain
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Iqra
Durrey
Shehwar
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2. Environmental
challenges
Causes and effects
Sustainable
Development
POPULATION
GROWTH
Types
Factors
Environmental Science
Topics
Submitted: Sir Amir Khan

3. The existence of crises in the environment in such a way
that it can cause damage to man or his environment.
Environmental Challenges
Environmental issues are the harmful effects of human
activities on the environment. These include pollution,
over-population, waste disposal, climate change, global
warming, greenhouse effect,

4. Our Mother Earth is currently facing a lot of
environmental concerns. The environmental
problems like global warming, acid rain, air
pollution, urban sprawl, waste disposal, ozone
layer depletion, water pollution, climate change
and many more affect every human, animal and
nation on this planet.
Example: Environmental Challenges

5. Deforestation is when trees are removed in fast growing portions of south Africa to build
houses, for agricultural purposes and to allow for clear grazing for farm animals. The
process of destroying a forest and replacing it with something else, especially by an
agricultural system.
Cause of Environmental Challenges
Deforestation

6. Cause of Environmental Challenges
Air Pollution
Air pollution is a mixture of solid
particles and gases in the air. Car
emissions, chemicals from
factories, dust, pollen and mold
spores may be suspended as
particles. Ozone, a gas, is a major
part of air pollution in cities. When
ozone forms air pollution, its also
called smog.

7. Cause of Environmental Challenges
Various Causes of Land Pollution
Solid Waste .
Agricultural Chemicals.
Industry, Energy, Manufacturing and
Construction Waste.
Mining.
Oil Spill.
Ashes.
Natural Disasters.
Radioactive Waste.

8.  It generally comes from the build up of carbon
dioxide gas in the atmosphere.
 Carbon dioxide is produced when fuels are
burnt.
 In this types of pollution sun rays go to the
atmosphere and they are trapped by green
houses gases. So the temperature on the earth
raise.
Cause of Environmental Challenges
Green House Effect

9. Sustainable development is the overarching
paradigm of the United Nations. The concept of
sustainable development was described by the 1987
Bruntland Commission Report as “development that
meets the needs of the present without
compromising the ability of future generations to
meet their own needs.”
Sustainable Development

10. Using recycled materials or renewable
resources when building is an example
of sustainable development. Building a
new community in a previously
undeveloped area without destroying the
ecosystem or harming the environment
is an example of sustainable
development.
Example: Sustainable Development

11. Population growth is the increase in the
number of people in a population or dispersed
group. Global human population growth
amounts to around 83 million annually, or 1.1%
per year. The global population has grown from
1 billion in 1800to 7.9 billion in 2020.
Population Growth

12. A group of organisms of one species
that interbreed and live in the same
place at the same time (e.g., human
population, the population of apple
trees, total population of deer in a
forest). It is a subset of total
individuals of a species that occupy a
certain geographic area in the world.
Example: Population Growth

13. Continuous increase or decrease in a
population in which the rate of change is
proportional to the number of individuals at
any given time.
Exponential Growth
Types of Population Growth

14. In logistic growth, Population expansion
decreases as resources become scarce and it
levels off when the carrying capacity of the
environment is reached. The logistic growth
curve is S-shaped.
Logistic Growth

15. Factor of population growth
When demographers attempt to forecast changes in the size of a population, they typically
focus on four main factors: fertility rates, mortality rates (life expectancy), the initial
age profile of the population (whether it is relatively old or relatively young to begin
with) and migration

16.  Population growth contribute to climate change and
changing environmental sustainability growth not
only affect the developmental objectives but also
social, economic and environmental changes. The
resources provided by the earth is not sustained and
could result in degradation in the coming decades.
 Population Growth increase demand for fresh water
increases.
 Population Growth increases demand for food
increases.
 Population Growth increases demand for energy
increases.
How population growth affect sustainability?

17. Poverty, environmental conditions, the use of
natural resources and economic and social
development are closely linked to population
growth and distribution.
 Resource depletion
 Pollution(water, air and land pollution)
 Migrations
 Wars
 Energy crisis
Impacts of population growth

18. Thank you