3. Definition
Everything in our
immediate
surrounds, including
both living and
nonliving things like
soil, water,
creatures, and plants
that adapt to their
conditions, is
referred to as the
“environment.”
3
4. Introduction
• It is a gift from nature that helps to sustain
life on Earth. The survival of life on Earth
depends on the environment.
• A biosphere component that affects the
condition of the entire planet is an
ecosystem.
• It includes both live and inanimate objects in
the environment.
4
6. Major Components of Environment
Biological Component
• The biological component of environment, as the
name suggests, consists of all living organisms. As
a result, it is frequently referred to as the biotic
component of the ecosystem. Animals, plants,
and microorganisms interact with abiotic
elements to build ecosystems.
• Additionally, several types of organisms, including
producers, consumers, and decomposers, are
separated apart in these ecosystems.
●●●
6
7. Major Components of Environment
Physical Component
• The physical component of the environment is the
non-living portion. Abiotic factors, which include
things like air, water, soil, and climate, are also
referred to as them.
• The three major categories of physical elements
are the atmosphere, the hydrosphere, and the
lithosphere. Scientists frequently refer to the zone
of life as the “biosphere” (or the worldwide sum
of ecosystems).
●●●
7
8. Major Components of Environment
Lithosphere:
• The crust, the earth’s topmost layer, is
composed of several minerals. It can be
found on both land (terrestrial crust) and
the oceans, where its depth can reach up to
100 kilometres (oceanic crust).
• Tectonic plates on Earth are the primary
part of the lithosphere.
●●●
8
9. Major Components of Environment
Hydrosphere:
• It includes all types of water bodies found
on Earth, such as oceans, seas, rivers, lakes,
ponds, and streams, among others. On
Earth, it covers 70% of the surface.
• The oceans contain salt water, which makes
up 97.5% of the total amount of water on
Earth. Freshwater makes up only 2.5% of
the world’s water.
●●●
9
10. Major Components of Environment
Atmosphere:
• It is a gaseous layer that surrounds the planet.
The amount of oxygen in Earth’s atmosphere is
unique and necessary for life.
• In addition to traces of hydrogen, helium, and
noble gases, it is mostly composed of 78.08%
nitrogen, 20.95% oxygen, 0.93% argon, and
0.038% carbon dioxide. Variable amounts of
water vapour are present.
●●●
10
11. Major Components of Environment
Biosphere:
• It describes all areas of the planet where life is
present. Ecosystems that support life may exist in
the soil, the air, the water, or the land. Geologist
Edward Suess came up with the word “biosphere”
to describe the area of the planet where life can
be found.
• A biosphere is the whole of all living things, often
known as biomass or biota.
●●●
11
12. Major Components of Environment
Biotic Components
• The ecosystem’s biotic elements are the
living things that make up the ecosystem.
Examples of biotic factors include fungi,
bacteria, animals, plants, and animals.
• Based on the source of energy, these biotic
components can be further divided into
producers, consumers, and decomposers.
●●●
12
13. Major Components of Environment
Producers: They produce food on their own
using light energy, such as plants, green algae,
and other organisms.
Consumers: All heterotrophs that rely on
producers for food, whether directly or
indirectly, fall under this category.
Decomposers: These include saprophytes,
which use dead materials and its decay as
food.
●●●
13
14. Major Components of Environment
Abotic Components
• Abiotic factors are defined as chemical or physical
elements that have an impact on living things as a
result of their existence or way of life. They go by
the name “ecological factors” as well.
• The environment, light, air, soil, nutrients, and
other physical and chemical factors make up the
abiotic component of an ecosystem. Abiotic
ecosystem elements generally vary from one
ecosystem to the next.
●●●
14
15. Major Components of Environment
Categories of Abiotic Components
• Edaphic Factors: The minerals, soil profile, soil
organic matter, soil moisture, and different
types of soil are all edaphic components
connected to the composition and structure of
the soil.
• Climatic Factors: Climate elements are the
physical and climatic aspects of the
environment, including air temperature, wind,
humidity, and water.
●●●
15
16. Major Components of Environment
Examples of Abiotic Components
• Water
• Light
• Temperature
• Humidity
• Soil
• Topographic Factor
16
18. Conclusion
Although contraception in general is safer than
pregnancy, it is nonetheless important to consider
contraceptive risks and benefits in relation to the
characteristics of different women.
18
#2:SAY:
Before we wrap up the course, let’s review what we have learned today.
During this course, we have
<READ the bullets from the slide.>
GO to next slide.
#3:SAY:
Before we wrap up the course, let’s review what we have learned today.
During this course, we have
<READ the bullets from the slide.>
GO to next slide.
#4:SAY:
Before we wrap up the course, let’s review what we have learned today.
During this course, we have
<READ the bullets from the slide.>
GO to next slide.
#5:SAY:
Before we wrap up the course, let’s review what we have learned today.
During this course, we have
<READ the bullets from the slide.>
GO to next slide.
#6:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#7:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#8:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#9:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#10:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#11:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#12:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#13:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#14:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#15:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#16:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
#18:SAY:
The purpose of epidemiology in public health practice is to
discover the agent, host, and environmental factors that affect health;
determine the relative importance of causes of illness, disability, and death;
identify those segments of the population that have the greatest risk from specific causes of ill health; and
evaluate the effectiveness of health programs and services in improving population health.
GO to next slide.
