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Ask QuestionPosted by Ved Barve 4 years ago
- 2 answers
Meghna Thapar 4 years ago
Prokaryotic cells are cells without a nucleus. Eukaryotic cells are cells that contain a nucleus. Eukaryotic cells have other organelles besides the nucleus. The only organelles in a prokaryotic cell are ribosomes. Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.
Posted by Rahul Karole 4 years ago
- 2 answers
Yogita Ingle 4 years ago
The Parliament enables citizens of India to participate in decision making and control the government.
Posted by Ritesh Das 4 years ago
- 1 answers
Yogita Ingle 4 years ago
When the image is formed on our "Retina", the light sensitive cells of our Retina gets activated and they generate electric signals. These signals are send to brain by the optic nerves. The brain interprets the electric signals in such a way that we see an image in erect and of the same size as the object.
Posted by Gargi Gupta 4 years ago
- 1 answers
Gargi Gupta 4 years ago
Posted by Piyush Choudhary 3 years, 11 months ago
- 5 answers
Divyansh Jain 4 years ago
Posted by Eunice James 4 years ago
- 5 answers
Divyansh Jain 4 years ago
Divyansh Jain 4 years ago
Yogita Ingle 4 years ago
| Afforestation | Deforestation |
| Afforestation is the planting of trees in a previously barren environment. | Deforestation is the destruction of trees and forests for human habitation and use. |
| Afforestation has a beneficial effect on the environment. | Deforestation has a detrimental effect on the environment. |
| The main reason for afforestation is to control carbon footprint and to ensure the sustainability of the natural environment. | Deforestation is a result of industrialization, globalization and urbanization. |
| Afforestation can ensure balance and survival to all life on earth. | Deforestation, if left unchecked leads to global warming, rising sea levels and encroachment or possible extinction of wildlife. |
Posted by Muneeb Reyaz 4 years ago
- 4 answers
Yogita Ingle 4 years ago
It was Georges Lemaître who first noted (in 1927) that an expanding universe could be traced back in time to an originating single point.
Posted by Sakshi G 4 years ago
- 3 answers
Gargi Gupta 4 years ago
Yogita Ingle 4 years ago
Cells constitute various components of plants and animals. A cell is the smallest unit of life and is capable of all living functions. Cells are the building blocks of life. This is the reason why cells are referred to as ‘the basic structural and functional unit of life’. All cells vary in their shapes, sizes, and activities they perform. In fact, the shape and size of the cell is related to the specific function it performs.
Posted by Amaan Faroqui 4 years ago
- 1 answers
Avani Rana 4 years ago
Posted by Himani Choudhary 4 years ago
- 1 answers
Meghna Thapar 3 years, 10 months ago
Rust is a form of iron oxide. It occurs when iron combines with the oxygen in the air causing it to corrode. Rust can affect iron and its alloys, including steel. The main catalyst for rust to occur is water. Although iron and steel structures seem solid to the eye, water molecules are able to penetrate microscopic gaps in the metal. This starts the process of corrosion. If salt is present, for example in seawater, the corrosion will be more rapid. Exposure to sulfur dioxide and carbon dioxide will also hasten the corrosive process.
Rust causes the metal to expand, which can place great stress on the structure as a whole. At the same time, the metal will be weakened and become brittle and flaky. Rust is permeable to air and water, so the metal beneath the rust layer will continue to corrode.
How to Prevent Rust?
Exposure to outdoor conditions will increase the risk of rust, especially if the climate is rainy or humid. The best ways to prevent rust include:
Using rust resistant alloys
Design considerations
Galvanization
Bluing
Organic coating
Powder coating
Regular maintenance
Using Rust Resistant Alloys
The most popular rust resistant alloys are stainless steel and weathering steel.
Stainless steel contains a minimum of 11% chromium. This allows the formation of a protective film of chromium oxide which acts as a shield against rust. The protective film will re-form if damaged. Corrosion resistance can be further enhanced with the addition of nickel.
Weathering steel, also known as “COR-TEN” steel, contains up to 21% of alloying elements such as chromium, copper, nickel and phosphorous. The alloys form a protective rust patina which reduces the corrosion rate with time. COR TEN steel tends to be cheaper than stainless steel.
Posted by Eunice James 4 years ago
- 5 answers
Dipti Gupta 4 years ago
Sanjana Singh 4 years ago
Yogita Ingle 4 years ago
| Afforestation | Deforestation |
| Afforestation is the planting of trees in a previously barren environment. | Deforestation is the destruction of trees and forests for human habitation and use. |
| Afforestation has a beneficial effect on the environment. | Deforestation has a detrimental effect on the environment. |
| The main reason for afforestation is to control carbon footprint and to ensure the sustainability of the natural environment. | Deforestation is a result of industrialization, globalization and urbanization. |
| Afforestation can ensure balance and survival to all life on earth. | Deforestation, if left unchecked leads to global warming, rising sea levels and encroachment or possible extinction of wildlife. |
Avani Rana 4 years ago
Posted by Hardik Pandey 4 years ago
- 4 answers
Shruti ? 3 years, 11 months ago
Eunice James 4 years ago
Akrati Patel 4 years ago
Yogita Ingle 4 years ago
A temporary arm like projections of eukaryotic cell membrane is called pseudopodia. It is temporarily filled in the cytoplasm organelle of the cell. Pseudopods extend and contract by the reversible assembly of actin subunits into many microfilaments.
Posted by Radha Rani 4 years ago
- 4 answers
Ayushi Singh 3 years, 11 months ago
Yogita Ingle 4 years ago
Crumbs are large pieces of aggregated soil present as lumps. They need to be crushed and grounded to make the soil even. This is done while ploughing and tilling of land before land is prepared for sowing. This is done with the help of iron leveller or wooden plank in smaller areas or power tillers in large areas.
Posted by Gurubasappa Bolishetty 4 years ago
- 3 answers
Yogita Ingle 4 years ago
Reforestation is the process of regenerating or replanting forest areas that have been destroyed or damaged for the benefits of mankind. Reforestation and afforestation share the same meaning i.e. afforestation is another name given to reforestation. Occasionally forests have the capability to regenerate due to the trees in the surroundings or due to the dispersion of seeds. However, forest lands that are badly degraded cannot be regenerated unless plants have been planted by using native methods.
Posted by Mr Himanshu 4 years ago
- 1 answers
Diksha Laniya🐥 4 years ago
Posted by Jit Barman 4 years ago
- 1 answers
Diksha Laniya🐥 4 years ago
Posted by Niyati Mangela 4 years ago
- 5 answers
Vineet Nair 4 years ago
Namya Patel 4 years ago
Namya Patel 4 years ago
Harshika Bishnoi 4 years ago
Yogita Ingle 4 years ago
Contact forces : Force that arises with the contact of 2 or more objects involved. Examples : Muscular force and Frictional Force
Posted by Radha Rani 4 years ago
- 5 answers
Yogita Ingle 4 years ago
Microorganisms are very small in size. They are so small that they cannot be seen with naked eyes. A microscope has to be used to see these organisms. Therefore, they are called microorganisms.
G.R.Samprith G.R.Samprith 4 years ago
Posted by Radha Rani 4 years ago
- 5 answers
Ayushi Singh 3 years, 11 months ago
Gargi Gupta 4 years ago
Namya Patel 4 years ago
Namya Patel 4 years ago
Yogita Ingle 4 years ago
The conditions required for combustion to take place are:
1. Presence of a fuel
2. Air (or oxygen)
3. Ignition temperature (minimum temperature at which a substance catches fire).
Posted by Satyansh Lal 4 years ago
- 1 answers
Akhilesh Kumar 4 years ago
Posted by Shridhar Vyas 4 years ago
- 5 answers
Posted by Sumit Mahata 4 years ago
- 3 answers
Yogita Ingle 4 years ago
Sound producing organ of human being is the larynx. It is a cartilaginous box and is also known as the sound box. There are two vocal cords in the box which vibrate on the passage of air through them and hence produce sound.
Posted by Yuvraj Soni 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Contact force is a force that is applied by objects in contact with each other. The contact force acts on a point of direct contact between the two objects. This force can either be continuous as a continuous force or can be momentary in the form of an impulse.Contact force is responsible for most of the interactions we experience in daily life.
Posted by Rani Swain 4 years ago
- 1 answers
Posted by Hamid Lone 4 years ago
- 2 answers
Piyush Kumar 3 years, 11 months ago
Yogita Ingle 4 years ago
The special shape is given to the boats and aeroplanes because,
Boats and aeroplanes are the bodies moving in the fluids like ship in water and aeroplanes in the air to reduce the fluid friction, called as 'Streamlined Shape'. This friction cause the aeroplane down and causes it to consume more fuel. To avoid this, boats and aeroplanes given a special shape.
Posted by Vishal Sahu 4 years ago
- 2 answers
Piyush Kumar 3 years, 11 months ago
Yogita Ingle 4 years ago
As lemon pickle is an acid and aluminum is a metal and metals react with acids to produce hydrogen gas.
So, it is not advisable to store lemon pickle in an aluminum utensil because it will spoil the pickle and holes will be formed in the vessel.
Posted by ꧁༒Nikhil ༒꧂ Sharma 4 years ago
- 3 answers
Posted by Krishna P 4 years ago
- 1 answers
Diksha Laniya🐥 4 years ago
Posted by Krishna P 4 years ago
- 2 answers
Dipti Gupta 4 years ago
Yogita Ingle 4 years ago
Red data book
- The source book that is used to keep a record of endangered species of plants, animals and other species existing within the territory of the state or country is called red data book.
- There are red data books for plants, animals and various other species.
- It is maintained by the International union for theConservation of Nature Resources (IUCN).
- It contains the most updated information of the global conservation status of species.
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Shruti ? 3 years, 11 months ago
1Thank You