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Rohan B 7 years ago
Posted by Lawanya Chandrakar? 7 years ago
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Yogita Ingle 7 years ago
- Decomposers are micro-organisms that convert the dead plants and animals to humus.
- Bacteria and fungi are the two types of decomposers.
- They help in the process of recycling of nutrients by decomposing various dead organisms such as plants and animals to form humus.
Itika Bhatt 7 years ago
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Dollymol Shibu 7 years ago
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Rahul Kumar Pandey 7 years ago
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Khushi Tanwar 7 years ago
Posted by Mayank Gupta 7 years ago
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Yogita Ingle 7 years ago
The different methods of asexual reproduction:
- Vegetative propagation- It is a type of asexual reproduction in which new plants are produced from roots, stems, leaves and buds.
- Budding- In organisms such as Hydra, a bud develops as an outgrowth at one specific site.
- These buds develop into tiny individuals and when fully mature, detach from the parent body and become new independent individuals.
- Spore formation- The spores are asexual reproductive bodies.
- Each spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature and low humidity.
- So they can survive for a long time. Under favourable conditions, a spore germinates and develops into a new individual.
Posted by Aman Kumar 7 years ago
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Pinky Semal 7 years ago
Posted by Sanjeev Soni 7 years ago
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Yogita Ingle 7 years ago
Cyclone is formed over tropical seas. Winds from opposite directions meet. This air is heated by the warm seas and so evaporates moisture from the ocean. This warm air rises up rapidly, cools and condenses to form clouds and produces an area of very low pressure. When moisture and air mix, it makes a collection of thunderstorms from which a cyclone can develop.
Posted by Awanish Singh Singh 7 years ago
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Posted by Awanish Singh Singh 7 years ago
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Meghna Thapar 6 years, 1 month ago
- The contamination of river water can be found by two factors: the presence of coliform bacteria in river water and measurement of pH of river water.
Posted by Uttam Singh 7 years ago
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Lavish Gujjar 7 years ago
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Meghna Thapar 6 years, 1 month ago
The exhaled air contains less oxygen and more carbon dioxide than the inhaled air because the air in the lungs becomes humidified with water before it is exhaled.
Posted by Bibhuti Bhushan Sinha 7 years ago
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Meghna Thapar 6 years, 1 month ago
Materials:
- 1.5V Battery
- Wire
- Compass
Procedure:
- Place the compass on a horizontal surface.
- Connect the wire to both ends of the battery.
- Place the middle of the wire directly over the compass, parallel to the initial orientation of the needle.
- Observe the needle deflect to one direction.
- Now flip the wire over so the current flows in the opposite direction and place it over the compass again.
- The needle will deflect in the other direction.
Explanation:
A current will carry with it its own magnetic field. The magnetic field lines form concentric circles around the wire so that the field points in one direction above the wire and the opposite direction below the wire. Using the right-hand grip rule, where one holds his hands as though he is gripping something with his thumb pointing in the direction of current flow, his fingers will curl in a way as to indicate the direction of the magnetic field. This is also the direction in which the needle deflects.
Posted by Atharv P 7 years ago
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Surekha Patil 7 years ago
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Gaurav Seth 7 years ago
Rain water and the water from water bodies on earth’s surface pass through the soil by the process of infiltration. The infiltrated water then gets accumulated in the aquifer deep under the ground. There are some layers of impermeable rocks which prevent the water in the aquifer from seeping down further. In this way, the ground water is recharged.
Posted by Nikita Giri 7 years ago
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Khushi Tanwar 7 years ago
Gaurav Seth 7 years ago
An electric bulb is used for light but it also gives heat. This is not desirable. This results in the wastage of electricity. This wastage can be reduced by using fluorescent tube lights (CFLs) in place of the bulbs. They work on chemical effect of electricity and not on heating effect of electricity. Thus they do not consume more energy as electric bulbs. Thus they are very cost efficient.
Posted by Prasad Ahirwar 7 years ago
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Krishna Tiwari 7 years ago
1Thank You