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Ask QuestionPosted by Nikhil Gowda 6 years, 3 months ago
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Posted by Madiha Fatima 6 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
Measures which can be taken to conserve forests and wildlife are:
- The unauthorized cutting of forest trees for timber trade and fire-wood should be stopped immediately.
- In case of Government authorized felling of trees, for every acre of forest cut down, an equal area of land should be planted with saplings of trees to make up for the loss in long run.
- The natural habitats of wild animals should be preserved by establishing conservation areas such as Biosphere Reserves, Wildlife Sanctuaries and National Parks.
- A total ban should be imposed on the poaching or capturing of any wild animal or bird.
Posted by Kumar Akshat 6 years, 3 months ago
- 2 answers
Yogita Ingle 6 years, 3 months ago
Following is the role of gravitation in supporting life on earth :-
Gravitational biology is the study of the effects gravity has on living organisms. Throughout the history of the Earth life has evolved to survive changing conditions, such as changes in the climate and habitat. However, one constant factor in evolution since life first began on Earth is the force of gravity.
Posted by Kumar Akshat 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
- Movement of body in east direction.. => friction, external force n gravity is acting
- Movement of a ball towards a pole.. => friction n gravity is acting
Posted by Bhanu Bainsla 6 years, 3 months ago
- 4 answers
Patel Arvind Bhai 6 years, 3 months ago
Yogita Ingle 6 years, 3 months ago
Organisms which are composed of multiple cells are called multicellular organisms. These cells are attached to each other to procedure a multicellular organism. Most of these cells are visible to the naked eye. Organisms including, animals, birds, plants, humans are the main groups of a multicellular organism. Most of the multicellular organisms are eukaryotes.
Multicellular Organisms Examples
Some of the examples of multicellular organisms are listed below:
- Animal – Hydra
- Plant – Spirogyra
- Cyanobacteria such as Chara (Multicellular prokaryotic organisms)
- Species of gymnosperms and angiosperm plants (Multicellular eukaryotic organisms)
Kumar Akshat 6 years, 3 months ago
Bhanu Bainsla 6 years, 3 months ago
Posted by Prerana Sharma 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
The number of oscillations per second is called the frequency of oscillation. Frequency is expressed in hertz. Its symbol is Hz.
Posted by Kunjal Tantwar 6 years, 3 months ago
- 2 answers
Rahul Raj Yadav 6 years, 3 months ago
Gaurav Seth 6 years, 3 months ago
Comparison of physical and chemical properties of metals and non – metals:-
|
S.No |
Property |
Metals |
Non-Metals |
|
1 |
Physical State |
Metals are solid at room |
Non-metals generally |
|
2 |
Melting and boiling points |
Metals generally have |
Non-metals have low |
|
3 |
Density |
Generally high. |
Generally low. |
|
4 |
Malleability and Ductility |
Malleable and ductile. |
Neither malleable nor |
|
5 |
Electrical and thermal conductivity |
Good conductors of heat |
Generally poor |
|
6 |
Luster |
Poses shining luster. |
Do not have luster |
|
7 |
Sonorous sound |
Give sonorous sound |
Does not give |
|
8 |
Hardness |
Generally hard except |
Solid non-metals are |
Posted by Sonu Kumar 6 years, 3 months ago
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Rahul Raj Yadav 6 years, 3 months ago
Shashwat Singh 6 years, 3 months ago
Posted by Harsh Vardhan 6 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
Cover slips are small squares of glass that cover the specimen placed on the microscope slide. They flatten the specimen for better viewing and also decrease the rate of evaporation from the sample, both in wet and dry mounted slides. If a stain or other liquid has been added, the cover slip keeps it on the specimen. Cover slips also protect the specimens from contamination by airborne particles or other substances.
Posted by Ridhika Kanawat 6 years, 3 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
The growing of population poseses a great threat to biodiversity because
* More population means more area of land to live, for this they cut trees to make their houses.
* More population means they need more food to live.
* More population means they need wood to make table, door etc. for their house due to which they cut trees.
* More population means they need clothes to wear for this they hunt animals for their skin to make clothes
Posted by Basavaraj Kadabin 6 years, 3 months ago
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Harsh Vardhan 6 years, 3 months ago
Posted by Yashant Chaudhary 6 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
The cells having nuclear material without nuclear membrane are termed as prokaryotic cells. The organisms with these kinds of cells are called prokaryotes. Example - bacteria and blue green algae. The cells having well organized nucleus with a nuclear membrane are termed as eukaryotic cells. All organisms other than bacteria and blue green algae are called eukaryotes. Example – plant cell and an animal cell.
Posted by Prerana Sharma 6 years, 3 months ago
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Nikhil Gowda 6 years, 3 months ago
Kosuri Aashritha 6 years, 3 months ago
Vandana Tiwari 6 years, 3 months ago
Posted by Tanu Kumari 6 years, 3 months ago
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Lakshika Tayal 6 years, 3 months ago
Posted by Amit Yadav 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
Corrosion is a process in which materials deteriorate as a result of a chemical reaction with moisture and other chemicals present in its surroundings. Generally, metals get corroded more easily. For example, iron in the presence of moisture, reacts with oxygen (air) to form hydrated iron oxide also called Rust.
4Fe + 3O2 +nH2O → 2Fe2O3.nH2O
Posted by Amit Yadav 6 years, 3 months ago
- 1 answers
Sia ? 6 years, 3 months ago
The process of extracting metals from their ores is called metallurgy. The process of metallurgy depends upon the nature of the ore. nature of the metal and the types of impurities present in the ore.
Posted by Anliya George 6 years, 3 months ago
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Shivansh Mishra 6 years, 3 months ago
Posted by Anis Asutosh 6 years, 3 months ago
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Deepshikha Kumari 6 years, 3 months ago
Posted by Sanjana Singh 6 years, 3 months ago
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Rahul Raj Yadav 6 years, 3 months ago
Posted by Khushi Pandey 6 years, 3 months ago
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Meghna Thapar 5 years, 6 months ago
Perennial Canals: These canals flow all the year round and thus they are known as perennial canals. They draw water from perennial rivers or from artificial lakes which maintain a high level of water on the upstream side. Inundation canal are long canals taken off from large rivers. Perennial canals usually have water in them all year through, as they originate from dam reservoirs or barrages. Since they provide water throughout the year, they are more suitable for agriculture and other purposes. Because of this reason, more Inundation canals are being converted to Perennial canals.
Posted by Viraj Rat 6 years, 3 months ago
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Akshay S Abhai S 6 years, 3 months ago
Sima Biswas 6 years, 3 months ago
Posted by Rishi Singh 6 years, 3 months ago
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Vandana Tiwari 6 years, 3 months ago
Lakshay Sharma 6 years, 3 months ago
Posted by Juaana Vohra 6 years, 3 months ago
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Posted by Juaana Vohra 6 years, 3 months ago
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Sudhir Singh 6 years, 3 months ago
Posted by Prerana Sharma 6 years, 3 months ago
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Abhishek Kumar Singh 6 years, 3 months ago
Posted by Shivam Khare 6 years, 3 months ago
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Rishi Singh 6 years, 3 months ago
Posted by Angel Arora 6 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
The pressure exerted by air around us is known as atmospheric pressure.
Take a good quality rubber sucker. It looks like a small rubber cup. Press it hard on a smooth plane surface. When we press the sucker, most of the air between its cup and the surface escapes out. The sucker sticks to the surface because the pressure of atmosphere acts on it. To pull the sucker off the surface, the applied force should be large enough to overcome the atmospheric pressure. This activity shows the magnitude of atmospheric pressure.
Posted by Angel Arora 6 years, 3 months ago
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Posted by Adnan Khan 6 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
Living things and their environment together form an ecosystem. The living or biotic components of an ecosystem are producers, consumers and decomposers.
- Producers: All producers are autotrophs because they make food for all non-green living organisms on earth. Example – green plants.
- Consumers: Animals and non-green plants obtain nutrients from the green plants and are called consumers. Consumers are heterotrophs. They are divided into three types – herbivores, carnivores and omnivores.
- Herbivores eat plants and plant products. Example – cow, goat, camel, elephant, etc.
- Carnivores are flesh-eating animals. They prey upon herbivores. Examples – tiger, lion, fox, hawk, etc.
- Omnivores eat both plants and animals. Examples – man, crow, bear, etc.
- Decomposers: They decompose and destroy the dead remains of plants and animals and return nutrients to the soil and help in the formation of humus. Examples – fungi and bacteria.
Posted by Aditya Kumar 6 years, 3 months ago
- 2 answers
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Neeru Kumari ? 6 years, 3 months ago
1Thank You