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प्रश्न
Write notes on the following:
Algal Bloom
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उत्तर
Algal Bloom is excess growth of algae due to abundant excess nutrients imparting distinct color to water.
संबंधित प्रश्न
Study the picture given below and answer the following questions :
Name one pollutant that causes the above the pollution.
List two major harmful effects of the following:
Rivers contaminated with sewage.
Fill in the Blanks:
Sewage is the source of ______ pollution
71% of earth surface is covered with:
Usage of chemical pesticides and fertilisers causes ________ pollution.
Mention the standards prescribed by BIS for quality of drinking water.
Read the paragraph and answer the questions following it.
| Water is essential for life. Without water there would be no life. We usually take water as granted for its purity, but we must ensure the quality of water. Pollution of water originates from human activities. Through different paths, pollution reaches to groundwater. Easily identified source or place of pollution is called as point source, e.g. municipal and industrial discharge pipes, where pollutants enter the water source. Non-point sources of pollution are those where a source of pollution cannot be easily identified, e.g. agricultural run-off, acid rain, etc. |
- How do you classify the various sources of water pollution?
- What are the point sources of water pollution?
- Name any two non-point sources of water pollution?
Microplastics can be found in almost every freshwater source.
Explain about oil spills.
Industrial wastes mainly consist of chemical pollutants.
