IGNOU BEVAE-181 Environmental Studies Assignment
Q1 A. Explain the importance of environment in day to day life by citing suitable example in about 120words?
Ans – Environment is everything settled around it can be living and non living that includes physical chemical and other natural forces living things live in their environment. They constantly interact with and changing response to environment.
Importance
of environment:
1.
Environment play an important role in healthy living of human beings.
2. It
matters because it is only home that human have food , air and other needs.
3.
Humanity entire life support system depends upon well being of all the
environment factor.
4. It play
an important role in regulating air and climate.
5. It is
important because of it is source of natural beauty and it is necessary for
physical and
Mental
too .
6. It is
key existence of life on the earth.
7. It is
the only planet in our solar system which supports of existence of life on
earth due to
presence
of environment.
B.
Sustainable development is a goal toward which all human societies need to be
moving .
Elaborate
the statement in about 120 words.
Ans. Sustainable development is the practice of using guidelines for environmentally responsible and energy saving to create new development projects and to create and maintain old project. It includes use only green Material in new construction and design project for harvest their own energy to reduce lead to power grid or incorporate green space in order to counter balance the space remove to build the on-site facilities . It is heavy emphasis on making sure what is built can be maintained and repair in way that minimizes the degradation of original development so that the life span of facilities is longer than normal. Sustainable development involved satisfy the needs of present population . It’s all about the well being of every one wherever they achieve this milestone collectively. Sustainable development is grip deeper. This means we want company to expand and people to have the best job, everyone to afford nutrition food wherever they live quality and affordable education for everyone and freedom of speech without violence.
Q2
differentiate between the following terms by giving suitable example in 120
words.
A
primary succession and secondary succession
Ans. Primary succession-. It is gradually growth of organism In which that area that was previously bare such as rock. Primary succession occur following an opening of a pristine habitats. It is includes that area . Example such as lava flow an area left from retreat glacier.
Secondary succession-. It is a series of community change which takes place in previous colonized , but distributed and damage habitat. It includes area which have been cleared of existing vegetation such as tree falling in a woodland. It is response to disturbance. For example forest fire , tsunami, flood and abandoned fields.
B direct
and indirect use value of biodiversity.
Ans Direct -. 1. Plant are an immediate incentives to biodiversity since it is the center benefit of giving nourishment that can be collected and expanded .
2. Fuel is immediate incentives to biodiversity in light of the fact that for a significant stretch of time, woodland have given wood which is utilized as a fuel ,which is utilized for gas.
3. Drugs and medicines are an immediate incentives to biodiversity in light of the fact that conventional clinical practice use plants.
Indirect-. 1. Social and traditional values are an aberrant incentives to biodiversity in the light of the fact that in some strict nation numerous plants and creatures are viewed as holy and sacred and love.
2. Ethical value are backhanded a incentives to the biodiversity since it identify with the protection of biodiversity.
3. Aesthetic value are aberrant incentives for biodiversity since characteristics scene at undisturbed sports are superb to watch the given opportunity to recreational exercise.
A. What
is biodiversity hotspot? Why is India considered as a mega biodiversity
hotspot?
Ans.
Biodiversity hotspot is the biographic region that is significant reservoir of
biodiversity
and
threatened with destruction. The term biodiversity refers to 25 biological
areas around
the world that which have lost at least 70percent of their original habitat. The remaining natural habitat in these biodiversity hotspot is just 1.4percent of the land surface of the planet. In India it is considered as a mega biodiversity hotspot because of the following reasons.
1. There
are found large numbers and variety of organisms in the India.
2. There
are 40000 species of plants and 90000 species of animals are found.
3. The
ecosystem populated by organism by India are diverted,
B distinguish between biota of the pelagic and benthic zones of the oceans with examples
Ans Benthic zone include the rooted submerged plants and animals. The animals like crabs , fish, pawn lobster are found at bottom of the oceanic layer, Example benthos include worms, clams, lobster, sponges and other tiny organism that lives in bottom of sediment.
Pelagic zone plants are in the form of rooted micro algae. This includes the phytho and zoplankton . The mackrel , saradine ,tuna are commonly found in fish species in the zone.
Example are Organism found in the zone are plankton, floating seasweed , jellyfish, tuna ,sharks and many dolphin.
C differentiate between the surface and ground water . Describe the factors responsible for degradation of water?
Ans Surface water – the nation water surface resources , the water in nation river, streets creek lakes are vitally important in our daily Life. The main use of surface water is drinking and include public uses , irrigation uses and for use by the thermoelectric industry.
Ground water is an important part of the water cycle. It the part of precipitation that seeps down through soil untill it reach rock material that is saturated with water, it is stored in the space of this rock particles.
Factor
responsible for degradation of water
1. Anthropogenic factors are responsible for reducing the quality of water.
2.
Pollution of water is a factor for degradation of water.
3. Acid
rain is a factor responsible for degradation of water.
4. Pollutants available in market responsible for degradation of water.
D write
a short note on global carbon cycle with the help of diagram.
Ans The global carbon cycle is biochemical cycle by which carbon exchange among the biosphere, geosphere, hydrosphere, and atmosphere of the Carbon is main compound in biological compound as well as major component in many material such as limestone. Along with nitrogen cycle and water cycle , carbon cycle is comprised a sequence of events that are key to make earth capable of sustaing life. It describes the movement of carbon as it is recycled
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