Advertisements
Advertisements
प्रश्न
Define ‘eutrophication’.
उत्तर
Eutrophication: “Organic matter in sewage poured into water bodies generally results in excessive growth of algae – which deoxygenates water and produces deadening atmosphere there.”
APPEARS IN
संबंधित प्रश्न
.................... is the purest form of natural water.
Use of excessive .................... by farmers causes water pollution.
The water in a lake is called ground water.
State what is potable water. Give its qualities or characteristics which make it fit for human consumption.
Complete the statement by filling the blank with the correct word from the option.
Solubility of most solids ___ with rise in temperature.
What happens when a spoonful of sugar, sawdust, and soil are added to a glass of water?
Pour water from the ice tray into a kettle. Ask an elder at your home to heat the kettle and observe the mouth of the kettle when the water starts boiling.
What do you see?
Match the following
1. | Flood | Lake |
2. | Surface water | Evaporation |
3. | Sunlight | Water vapour |
4. | Cloud | Pole |
5. | Frozen water | Increased rainfall |
In the coastal areas, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason.
The jumbled word is given here. Write the correct form of each word.
QUIFERA