18. Sustainable agriculture.
Sustainable agriculture is the practice of farming using principles
of ecology , the study of relationships between organ is ms and their
environment. It has been defined as "an integrated system of
plant andanimal production practices having a site-specific application
that will last over the long term
19.
20. SUSTAINABLE HABITAT
A sustainable habitat is an ecosystem that
produces food and shelter for people and other
organisms, without resource depletion and in
such a way that no external waste is produced.
Thus the habitat can continue into future tie
without external infusions of resource. Such a
sustainable habitat may evolve naturally or be
produced under the influence of man.[citation
needed] A sustainable habitat that is created and
designed by human intelligence will mimic
nature.
24. SUSTAINABLE HABITAT
The global energy scenario has undergone a drastic change
in the last two decades. It is estimated that buildings,
their construction, operation, and maintenance demand
almost two-third of the global energy demand, and this
is expected to grow by an additional 45% by 2025. In
India, commercial and residential buildings account for
more than 30% of the country’s total electricity
consumption. Energy-efficient buildings and utility
systems, on the other hand, can reduce energy demand
by as much as 40%. Such buildings have small ‘energy
footprints’ as they use efficient building envelopes and
systems that let in more natural light, integrate natural
cooling systems with conventional air conditioning
systems, and use renewable sources of energy to reduce
dependence on conventional sources.
49. Sustainable agriculture integrates three main
goals--environmental health, economic
profitability, and social and economic equity. A
variety of philosophies, policies and practices
have contributed to these goalseople in many
different capacities, from farmers to
consumers, have shared this vision and
contributed to it. Despite the diversity of
people and perspectives, the following themes
commonly weave through definitions of
sustainable agriculture.
50. Sustainability rests on the principle that we must
meet the needs of the present without
compromising the ability of future generations to
meet their own needs. Therefore, stewardship of
both natural and human resources is of prime
importance. Stewardship of human resources
includes consideration of social responsibilities
such as working and living conditions of laborers,
the needs of rural communities, and consumer
health and safety both in the present and the
future. Stewardship of land and natural resources
involves maintaining or enhancing this vital
resource base for the long term.
51. A systems approach also
implies interdisciplinary efforts in research
and education. This requires not only the
input of researchers from various
disciplines, but also farmers, farmworkers,
consumers, policymakers and others.
52. Sustainable production practices involve a
variety of approaches. Specific strategies must
take into account topography, soil
characteristics, climate, pests, local
availability of inputs and the individual
grower's goals. Despite the site-specific and
individual nature of sustainable agriculture,
several general principles can be applied to
help growers select appropriate management
practices:
53. Selection of species and varieties that are well
suited to the site and to conditions on the
farm;
Diversification of crops (including livestock)
and cultural practices to enhance the
biological and economic stability of the farm;
Management of the soil to enhance and
protect soil quality;
Efficient and humane use of inputs; and
Consideration of farmers' goals and lifestyle
choices.
54. The global energy scenario has undergone a drastic change in
the last two decades. It is estimated that buildings, their
construction, operation, and maintenance demand almost
two-third of the global energy demand, and this is expected to
grow by an additional 45% by 2025. In India, commercial and
residential buildings account for more than 30% of the
country’s total electricity consumption. Energy-efficient
buildings and utility systems, on the other hand, can reduce
energy demand by as much as 40%. Such buildings have small
‘energy footprints’ as they use efficient building envelopes and
systems that let in more natural light, integrate natural
cooling systems with conventional air conditioning systems,
and use renewable sources of energy to reduce dependence on
conventional sources.
55. READ THIS CAREFULLY
The world is changing every second.
Environment pollution is a major source of
worry. Global warming is changing the
climate and the world as we know it every
day. Natural resources are depleting rapidly
and it is only a matter of time when the
world will run out of all its resources.