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प्रश्न
Use your brain power!
Think about all the foodstuffs obtained from the sea. Find more information and write ten lines about them.
उत्तर
- Many marine organisms inhabit seas. Some of these form our food.
- Various edible varieties of fish are caught from the seas.
- There are good-quality proteins and fatty acids in the fish. Therefore, it is a nutritive food.
- Shell fish varieties such as crabs, prawns, and lobsters are favourite food items worldwide Prawns are abundantly available in the Indian waters; therefore, we get lots of foreign exchange through the export of prawns.
- Bivalves, squids, and oysters are also eaten as delicacies.
- Algae from the seas are also eaten in the Asian countries, though not in India.
- Agar is the substance made from marine algae, which are used in jellies and puddings.
- Salt is made from the seawater.
- In some countries, potable water is made from the seawater by special processes.
- Young ones of prawns and fish are used for the aquaculture.
संबंधित प्रश्न
Fill in the blanks with the appropriate answers:
The water bearing layer of the earth is ________.
Name:
Three major sources of natural water
List three major impurities present in river water.
Name :
Two chemicals used to destroy germs present in water.
Name :
Two substances which add taste to water.
Define:
Aeration
Complete the statement by filling in the blanks with the correct words.
________ is the purest form of water. It may dissolve gases like ________forming weak acids.
(sea water/ lake water/rain water ; chlorine/ammonia/carbon dioxide)
Give two examples.
Sources of water
Seas and oceans are full of water on earth. However, a very small percentage of water present on earth is available for us. This percentage is roughly
Complete the given table
| Form of Water | The process by which formed | Location where found |
| (a) Liquid | ||
| (b) Solid | ||
| (c) Gaseous |
