2. What is Ecology?
• Ecology is a branch of science, including human science,
population, community, ecosystem and biosphere.
• Ecology is the study of organisms, the environment and how the
organisms interact with each other and their environment. It is
studied at various levels, such as organism, population,
community, biosphere and ecosystem.
• An ecologist’s primary goal is to improve their understanding of
life processes, adaptations and habitats, interactions and
biodiversity of organisms.
3. Biotic and Abiotic Factors
• The main aim of ecology is to understand the
distribution of biotic and abiotic factors of living
things in the environment.
• The biotic and abiotic factors include the living
and non-living factors and their interaction with
the environment.
4. Biotic components
Biotic components are living factors of an
ecosystem. A few examples of biotic components
include bacteria, animals, birds, fungi, plants, etc.
5. Abiotic components are non-living chemical and physical factors of an ecosystem.
These components could be acquired from the atmosphere, lithosphere and
hydrosphere. A few examples of abiotic components include sunlight, soil, air,
moisture minerals and more.
Living organisms are grouped into biotic components, whereas non-living
components like sunlight, water, topography are listed under abiotic components.
6. ECOSYSTEM
An ecosystem is a natural unit
consisting of all plants, animals
and micro-organisms (biotic
factors) in an area functioning
together with all of the non-living
physical (abiotic) factors of the
environment.
7. • Is the world getting warmer?
• If so, are the actions of mankind
to blame for earth’s temperature
increases?
• What can/should be done about
these issues?
Introduction
8. • Global Warming is the increase of Earth's
average surface temperature due to effect of
greenhouse gases,
• such as carbon dioxide emissions from
burning fossil fuels or from deforestation,
which trap heat that would otherwise escape
from Earth.
• This is a type of greenhouse effect.
What is global
warming?
9. How Global Warming Works
Fossil fuels (coal, oil, natural gas)
Carbon Dioxide (CO2)
10. What are greenhouse gases?
Any gases that cause the “greenhouse
effect!”
Imagine… a car on a cool but sunny day…
11.
12. The Sun’s energy
passes through the
car’s windshield.
This energy (heat)
is trapped inside
the car and cannot
pass back through
the windshield,
causing the inside
of the car to warm
up.
Example of the
Greenhouse Effect
13. Difference
GLOBAL
WARMING
is the increase of the
Earth’s average
surface temperature
due to a build-up of
greenhouse gases
in the atmosphere.
CLIMATE
CHANGE
is a broader term
that refers to long-
term changes in
climate, including
average
temperature and
precipitation.
14. Effects of Global Warming
Increased Temperature
Habitat Damage and
Species Affected
Changes in Water Supply
Rising Sea Level
16. 1) Loss of crop & grazing land
2) Depletion of world's tropical forests
3) Extinction of species
4) Rapid population growth
5) Shortage of fresh water resources
6) Over fishing, habitat destruction, & pollution in the marine
environment.
7) Threats to human health
8) Climate change
9) Acid rain
10) Pressures on energy resources
17. Burning of Fossil Fuels
Pollution from coal,
natural gas, and oil
Pollution from coal,
natural gas, and oil
Pollution from coal,
natural gas, and oil
18. Turn off your computer or the TV
when you’re not using it.
Take shorter showers. Heating water uses energy.
Keep rooms cool by closing the blinds, shades, or
curtains.
Turn off the lights when you leave a room.
Use compact fluorescent bulbs.
Simple Things To STOP GLOBAL WARMING
19. Dress lightly when it’s hot instead of turning up
the air conditioning. Or use a fan.
Dress warmly when it’s cold instead of turning
up the heat.
Offer to help your parents keep the air filters on
your AC and furnace clean.
Walk short distances instead of asking for a
ride in the car.
Plant a tree.
Simple Things To STOP GLOBAL WARMING
Recycle.
