Chapter 14 – Natural Resources

Class IX - Biology
Chapter 14 - Natural Resources (Hindi Medium)
Atmospheric Pollution and Acid Rain

Formation of Clouds, Nucleus, Precipitation, Natural and Man Made Sources of Air Pollution, Effect of Air Pollution, Carbon Monoxide Poisoning, Global Warming and Green House Effect,
Acid Rain - Its Cause and Consequences

Important Note: All video lessons are systematically indexed on the website: www.gianmandir.com wherein one can register oneself.

This Channel initiated by Dr. D. R. Vij (former Professor of Physics, Kurukshetra University, India) primarily aims at taking free education to the doorsteps of learners who for various economic and social factors can not avail benefits of regular coaching.

In view of the congested classrooms coupled with hefty tuition fee, social taboos and hazards of travelling (for girls in particular) this mode of extending education had become a necessity.

This self-learning approach is a definite step towards democratisation of education i.e. taking education even to individuals who staying in remote and far off areas were being deprived of education for no fault of theirs.

Viewers are requested to click LIKE button if they like a video and SUBSCRIBE to this channel to get notifications of more video lessons being uploaded from time to time in future. They are also requested to SHARE videos with nears and dears who can be benefitted.

With thanks
Dr. D. R. Vij
Professor of Physics (Retd.)
(Mob) +919416220316

Class IX - Biology
Chapter 14 - Natural Resources (Hindi Medium)
Water-A Wonder Liquid

Importance of Water - As a Medium for Cellular Processes and Chemical Reactions, Transportation, Solvent, Waste removal, Temperature Maintenance
Water Pollution - Sources like Chemicals, Sewage, Industrial Waste, Thermal Pollutants and Dams
Consequences of Water Pollution - Eutrophication, Causes Several Water Borne Diseases like Cholera, Jaundice, etc.
How to Check Water Pollution

Important Note: All video lessons are systematically indexed on the website: www.gianmandir.com wherein one can register oneself.

This Channel initiated by Dr. D. R. Vij (former Professor of Physics, Kurukshetra University, India) primarily aims at taking free education to the doorsteps of learners who for various economic and social factors can not avail benefits of regular coaching.

In view of the congested classrooms coupled with hefty tuition fee, social taboos and hazards of travelling (for girls in particular) this mode of extending education had become a necessity.

This self-learning approach is a definite step towards democratisation of education i.e. taking education even to individuals who staying in remote and far off areas were being deprived of education for no fault of theirs.

Viewers are requested to click LIKE button if they like a video and SUBSCRIBE to this channel to get notifications of more video lessons being uploaded from time to time in future. They are also requested to SHARE videos with nears and dears who can be benefitted.

With thanks
Dr. D. R. Vij
Professor of Physics (Retd.)
(Mob) +919416220316

Class IX - Biology
Chapter 14 - Natural Resources (Hindi Medium)
SOIL-The Largest Source of Universals

Importance - Soil Formation by Sun, Water, Wind and Living Organisms (Plants and Lichens)
Types and Quality of Soil Topmost Fertile Layer
Soil Pollution - Causes, Soil Erosion - Causes, Effects and Prevention

Important Note: All video lessons are systematically indexed on the website: www.gianmandir.com wherein one can register oneself.

This Channel initiated by Dr. D. R. Vij (former Professor of Physics, Kurukshetra University, India) primarily aims at taking free education to the doorsteps of learners who for various economic and social factors can not avail benefits of regular coaching.

In view of the congested classrooms coupled with hefty tuition fee, social taboos and hazards of travelling (for girls in particular) this mode of extending education had become a necessity.

This self-learning approach is a definite step towards democratisation of education i.e. taking education even to individuals who staying in remote and far off areas were being deprived of education for no fault of theirs.

Viewers are requested to click LIKE button if they like a video and SUBSCRIBE to this channel to get notifications of more video lessons being uploaded from time to time in future. They are also requested to SHARE videos with nears and dears who can be benefitted.

With thanks
Dr. D. R. Vij
Professor of Physics (Retd.)
(Mob) +919416220316

Class IX - Biology
Chapter 14 - Natural Resources (Hindi Medium)
Biogeochemical Cycles Part-1

Water Cycle - Evaporation, Condensation, Precipitation and Infiltration

Important Note: All video lessons are systematically indexed on the website: www.gianmandir.com wherein one can register oneself.

This Channel initiated by Dr. D. R. Vij (former Professor of Physics, Kurukshetra University, India) primarily aims at taking free education to the doorsteps of learners who for various economic and social factors can not avail benefits of regular coaching.

In view of the congested classrooms coupled with hefty tuition fee, social taboos and hazards of travelling (for girls in particular) this mode of extending education had become a necessity.

This self-learning approach is a definite step towards democratisation of education i.e. taking education even to individuals who staying in remote and far off areas were being deprived of education for no fault of theirs.

Viewers are requested to click LIKE button if they like a video and SUBSCRIBE to this channel to get notifications of more video lessons being uploaded from time to time in future. They are also requested to SHARE videos with nears and dears who can be benefitted.

With thanks
Dr. D. R. Vij
Professor of Physics (Retd.)
(Mob) +919416220316

Class IX - Biology
Chapter 14 - Natural Resources (Hindi Medium)
Biogeochemical Cycles Part-2

Nitrogen Cycle - Nitrogen Fixation (Atmospheric, Biological, Industrial), Assimulation, Ammonification, Nitrification, Denitrification

Important Note: All video lessons are systematically indexed on the website: www.gianmandir.com wherein one can register oneself.

This Channel initiated by Dr. D. R. Vij (former Professor of Physics, Kurukshetra University, India) primarily aims at taking free education to the doorsteps of learners who for various economic and social factors can not avail benefits of regular coaching.

In view of the congested classrooms coupled with hefty tuition fee, social taboos and hazards of travelling (for girls in particular) this mode of extending education had become a necessity.

This self-learning approach is a definite step towards democratisation of education i.e. taking education even to individuals who staying in remote and far off areas were being deprived of education for no fault of theirs.

Viewers are requested to click LIKE button if they like a video and SUBSCRIBE to this channel to get notifications of more video lessons being uploaded from time to time in future. They are also requested to SHARE videos with nears and dears who can be benefitted.

With thanks
Dr. D. R. Vij
Professor of Physics (Retd.)
(Mob) +919416220316