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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
Explain the difference.
Degradable and non-degradable waste
Match the items in column ‘A’ with the proper ones in column ‘B’ and explain their impact on the environment.
| Column ‘A’ | Column ‘B’ |
| 1. Harmful waste | a. Glass, rubber, carry bags, etc. |
| 2. Domestic waste | b. Chemicals, pigments, ash, etc. |
| 3. Biomedical waste | c. Radioactive material |
| 4. Industrial waste | d. Leftover food, vegetables, peelings of fruits. |
| 5. Urban waste | e. Bandages, cotton, needles, etc. |
What are sources of waste?
What is meant by domestic waste?
Define gaseous waste.
What is waste disposal?
In schools, waste management rules say that we should separate waste into two categories.
Discuss the role of an individual to reduce environmental pollution.
Plastic bags and food packaging is a ______ item.
Provide a suitable term that expresses the meaning of the following statement.
An area where a lot of garbage is collected, spread out and covered with soil.
