4 Marks Each

Question 14 Marks

Write a short note on : Discuss the adverse effects 0f climate change.

Answer

Adverse effects of global warming/climate changes are :

Changes in growth and devlopment of vegetation.
Some birds like sparrows and vultures are disappearing from Earth.
Nearly 2000 glaciers of Himalayas have receded .melted.
Frequency of natural calamities like drought. Excessive rainfall and cyclones has increased since last $10$ years.
Places of heavy rainfall receive less rains and those of scanty rainfall receive heavy rains .
Production of pulses has decreased and so has ground water level.
Melting of glaciers has incresed ocean water level causing extensive erosion along the coastline. Also areas near the coast of Maldives . Bangladesh ,Australia,etc. have been submrged.
Dehydration and malnutrition occurs in humans due to increase in temperature.
The season cycle is changing.
Salinity of soil in gujarat is increasing.
Agriculture produce has declined sharply.
Frequency of diseases like cholera, dengue, malaria, swine flu. Etc. has increased.
Flowers are losing thaeir fragrance and beehives are fast disappearing.
The “Greenpeace” institution predicts that about $55$ lakh people living in Gujarat will have to migrate in $2100 C.E.$

Question 24 Marks

List down the possible adverse effects of global warming.

Answer

Adverse effects of global warming/climate changes are :

Changes in growth and devlopment of vegetation.
Some birds like sparrows and vultures are disappearing from Earth.
Nearly $2000$ glaciers of Himalayas have receded .melted.
Frequency of natural calamities like drought. Excessive rainfall and cyclones has increased since last $10$ years.
Places of heavy rainfall receive less rains and those of scanty rainfall receive heavy rains .
Production of pulses has decreased and so has ground water level.
Melting of glaciers has incresed ocean water level causing extensive erosion along the coastline. Also areas near the coast of Maldives . Bangladesh ,Australia,etc. have been submrged.
Dehydration and malnutrition occurs in humans due to increase in temperature.
The season cycle is changing.
Salinity of soil in gujarat is increasing.
Agriculture produce has declined sharply.
Frequency of diseases like cholera, dengue, malaria, swine flu. Etc. has increased.
Flowers are losing thaeir fragrance and beehives are fast disappearing.
The “Greenpeace” institution predicts that about 55 lakh people living in Gujarat will have to migrate in $2100 C.E.$

Question 34 Marks

Write a short note on : Necessary steps to prevent global warming.

Answer

Steps to be taken to prevent global warming:

Reduce the use of sources which release $CO _2$.
Afforestation and conservation of forests.
Growing plants and trees around your house to reduce carbon dioxide.
Avoid using palstic.
Optimum and judicious use of manure, pesticides, household appliances, natural resources, petrolium products, electricity, means of transport and water.
Control population.
Add biotics in food for animals.
adopt organic farming by using green or cattle manure.
Increase the use of eco-friendly paper. $CNG$ and non-conventional sources of energy.
Practice rainwater harvesting.

Question 44 Marks

What steps should be taken to prevent global warming ?

Answer

Steps to be taken to prevent global warming:

Reduce the use of sources which release $CO _2$.
Afforestation and conservation of forests.
Growing plants and trees around your house to reduce carbon dioxide.
Avoid using palstic.
Optimum and judicious use of manure, pesticides, household appliances, natural resources, petrolium products, electricity, means of transport and water.
Control population.
Add biotics in food for animals.
adopt organic farming by using green or cattle manure.
Increase the use of eco-friendly paper. $CNG$ and non-conventional sources of energy.
Practice rainwater harvesting.

[Old] Social science 4 Marks Each