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प्रश्न
What is eutrophication?
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उत्तर
It is the process of oxygen depletion in water bodies, occurring either naturally or as a result of human activities. Eutrophication occurs due to the introduction of nutrients and chemicals through the discharge of domestic sewage, industrial effluents, and fertilizers from agricultural fields. Algae and phytoplankton use carbon dioxide, inorganic nitrogen, and phosphate from the water as food. This causes the death of most aquatic organisms by depleting the water of its oxygen.
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संबंधित प्रश्न
Students in a school listened to the news read in the morning assembly that the mountain of garbage in Delhi suddenly exploded and various vehicles got buried under it. Several people were also injured and there was traffic jam all around. In the brain storming session the teacher also discussed this issue and asked the students to find out a solution to the problem of garbage. Finally they arrived at two main points -one is self management of the garbage we produce and the second is to generate less garbage at individual level.
1) Suggest two measures to manage the garbage we produce.
2) As an individual, what can we do to generate the least garbage? Give two points.
3) List two values the teacher instilled in his student in this episode.
What are the biodegradable waste?
Explain the difference.
Degradable and non-degradable waste
How will you register individual participation in solid waste management?
Write any two things that can be recycled.
How does recycling help reduce pollution?
Unwanted materials pollute our ______.
What is compost?
What is waste disposal or final disposal?
What is Landfill?
