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Posted by Amrita Kushwaha 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
Fish farming or pisciculture involes raising fishes commercially in tanks and enclosures,such as -fish pond ,usually for food,it is principal form for aquaculture ,while other methods fall to the mariculture.
Posted by Amrita Kushwaha 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
The act of rearing, raising and caring of honey bee on a large scale to obtain honey and wax from them is called apiculture.
It is preferred among agriculturists as it requires low investment and gives rise to supplementary income.
Posted by Ritika Shukla 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
The more greenhouse gases concentrate in the atmosphere, the more heat gets locked up in the molecules. Scientists have known about the greenhouse effect since 1824, when Joseph Fourier calculated that the Earth would be much colder if it had no atmosphere.
Posted by Kavita Rajput 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
The state in which all the organs and systems of the body are working well in perfect harmony is referred to as health.
The various factors which play an important role in leading a healthy life are balanced diet, adequate exercise and rest, maintaining personal hygiene, cleanliness of surroundings and prevention of diseases.
Posted by Kavita Rajput 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
To reduce the infection of infectious diseases, following precautions can be taken in schools:
- Drinking clean and hygienic water
- Preventing accumulation of water in surroundings
- Keeping the toilet neat and clean
- Avoiding consumption of uncovered food and other eatables
- Using a handkerchief to cover the mouth while sneezing or coughing
- Encouraging students and their parents to take vaccinations against infectious diseases
Posted by Naina Choudhary. 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
Kinetic energy is the energy possessed by an object because of motion. For example, a fast moving pebble can injure a person or break glass pane of window, energy of moving vehicle, a fast moving wind can damage many house, or wind can move blades of wind mill, etc.
Energy possessed by an object because of its position is called potential energy. For example; when a stone is kept at a height, it possesses some energy because of its height.
Posted by Naina Choudhary. 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
Broiler - the purpose of breeding broiler are for meat.
food requirements are protein, fats,rich in vitamin A and K.
Layer- the purpose of breeding layers are for eggs.
food requirements are fibrous and cheap diet.
Posted by Karan Wadhwa 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
Agriculture is the systematic use of basic practices to grow the crops which provide food. Crop is the group of same kind of plants grown and cultivated at one place in significant quantities. Crops are grown to obtain food which can be sold for money. Crops can yield grains, pulses, vegetables, ornamental plants etc. Healthy crops require provision of resources like carbon dioxide, water, sunlight and nutrients provided by nature.
Posted by Haleem Gaming 4 years, 7 months ago
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Meghna Thapar 4 years, 6 months ago
Spermatozoa are produced in the germinal epithelium of the seminiferous tubules and released into the lumina of these ducts. The germinal epithelium contains both Sertoli cells and the developing spermatocytes. Sertoli cells extend from the basement membrane of the germinal epithelium to the lumen of the tubule.
Posted by Haleem Gaming 4 years, 7 months ago
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Sunil Dhankar 4 years, 7 months ago
Yogita Ingle 4 years, 7 months ago
Archimedes’ principle states that:
The upward buoyant force that is exerted on a body immersed in a fluid, whether partially or fully submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid.
Posted by Roman 1St I'D 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
An ecosystem is a natural unit consisting of all plants, animals and microorganisms (biotic factors) in an area functioning together with all of the physical (biotic) factors of the environment.
Posted by Saurabh Raj 4 years, 7 months ago
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Shivanshu Mishra 4 years, 7 months ago
Posted by Sandeep Kamboj 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
Two source of energy are:
i. Renewable source of energy- Renewable source of energy is the energy which is being produced continuously in nature and is inexhaustible in nature. Example - wind energy, ocean thermal energy
ii. Non- Renewable source of energy - Non-renewable source of energy is can be defined as source of energy which have accumulated in nature over a very, very long time and cannot be quickly replaced when exhausted. Example - Coal, petroleum and nuclear energy.
Posted by Rashmi Rani 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
The motion of the moon around the earth is due to the centripetal force. The centripetal force is provided by the force of attraction of the earth. In our solar system, all the planets go around the Sun which means that there exists a force between the Sun and the planets.
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Krish Jadhav 4 years, 7 months ago
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Meghna Thapar 4 years, 6 months ago
Non flowering plants are those plants which cannot produce flowers. They reproduce mainly through spores. Examples of non flowering plants include ferns, mosses and liverworts. They belong to cryptogams. Cryptogams are non flowering and seedless, spore-bearing plants.
Posted by Rinasharma Rinasharma 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
Non-homogeneous systems in which solids are dispersed in liquids, are called suspensions. A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye.
Posted by Naina Choudhary. 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
Application of centrifugation are:
- Used in diagnostic laboratories for blood and urine test.
- Used in dairies and home to separate butter from cream.
- Used in a washing machines to squeeze out water from wet clothes.
Posted by Naina Choudhary. 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
A colloid is a heterogeneous mixture whose particles are not as small as solution but they are so small that cannot be seen by naked eye. When a beam of light is passed through a colloid then the path of the light becomes visible. For example milk, smoke etc.
Properties of a colloid
• A colloid is a heterogeneous mixture.
• The size of particles of a colloid is too small to be individually seen by naked eyes.
• Colloids are big enough to scatter a beam of light passing through it and make its path visible.
• They do not settle down when left undisturbed, that is, a colloid is quite stable.
• They cannot be separated from the mixture by the process of filtration. But, a special technique of separation known as centrifugation can be used to separate the colloidal particles.
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Kanak Singh 4 years, 7 months ago
1Thank You