this ppt is made for the chapter human influence on the ecosystem

1. BIOLOGY
HUMAN INFLUENCE
ON THE ECOSYSTEM

2. SAGAR
DHAWDE
MADE BY

3. POPULATION
• For the past 300-1000 years the human
population has been increasing at an
alarming rate. This increase in human
population has led to a significant
destruction in the plant as well as the
animal kingdom.

4. • As the human population
increased it went on
depleting more and more of
the earths resources.

5. RESOURCES
• Natural resources occur naturally
within environments that exist relatively
undisturbed by humanity, in a natural form.
A natural resource is often characterized by
amounts of biodiversity and geodiversity existent
in various ecosystems.
• Natural resources are derived from the
environment. Some of them are essential for our
survival while most are used for satisfying our
needs. Natural resources may be further classified
in different ways.

7. RENEWABLE
• renewable resource is an organic natural resource that
can replenish in due time compared to the usage, either
through biological reproduction or other naturally recurring
processes. Renewable resources are a part of Earth's natural
environment and the largest components of its ecosphere. A
positive life cycle assessment is a key indicator of a
resource's sustainability.
• Definitions of renewable resources may also include
agriculture production, as in sustainable agriculture and to
an extent water resources. In 1962 Paul Alfred Weiss defined
Renewable Resources as: "The total range of living
organisms providing man with food, fibres, drugs,
etc...". Another type of renewable resources is renewable
energy resources. Common sources of renewable energy
include solar, geothermal and wind power, which are all
categorised as renewable resources.

8. nonrenewable
• The original organic material, with the aid of
heat and pressure, becomes a fuel such as oil
or gas. Earth minerals and metal ores, fossil
fuels (such as coal, petroleum, and natural
gas), nuclear fuels, and groundwater in
certain aquifers are all non-renewable
resources.

9. POLLUTION
• Pollution is the introduction
of contaminants into the natural environment
that cause adverse change.[1]Pollution can
take the form of chemical
substances or energy, such as noise, heat or
light. Pollutants, the components of pollution,
can be either foreign substances/energies or
naturally occurring contaminants. Pollution is
often classed as point source or nonpoint
source pollution.

10. TYPES OF POLLUTION

11. THE GREEN HOUSE EFFECT
• The greenhouse effect is a natural process
that warms the Earth's surface. When the
Sun's energy reaches the Earth's atmosphere,
some of it is reflected back to space and the
rest is absorbed and re-radiated by
greenhouse gases.

13. Acid rain

15. CONSERVATION
• conservation of natural resources, the wise use of the
earth's resources by humanity. The term conservation came
into use in the late 19th cent. and referred to the
management, mainly for economic reasons, of such valuable
natural resources as timber, fish, game, topsoil, pastureland,
and minerals, and also to the preservation of forests
(see forestry), wildlife (see wildlife refuge), parkland,
wilderness, and watershed areas. In recent years the science
of ecology has clarified the workings of the biosphere; i.e.,
the complex interrelationships among humans, other
animals, plants, and the physical environment. At the same
time burgeoning population and industry and the
ensuing pollution have demonstrated how easily delicately
balanced ecological relationships can be disrupted (see air
pollution; water pollution; solid waste).

16. SAVE EARTH!!!!!

17. Thank you