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Ask QuestionPosted by Vinu Vinayak 7 years, 3 months ago
- 2 answers
Yogita Ingle 7 years, 3 months ago
The scientific name for a mulberry tree depends on the species: a red mulberry is Morus rubra, a white mulberry is Morus alba and a black mulberry is Morus nigra. There is also a variant on white mulberry, Russian mulberry, called Morus alba tatarica.
Posted by Aatish Kumar 7 years, 3 months ago
- 2 answers
Shreekar Hhadapad 7 years, 3 months ago
Sonali Aggarwal 7 years, 3 months ago
Soil gets polluted by the excessive use of fertilizers or mixing of the non-biodegradable waste with it.Soil pollution can be prevented if we use the fertilizers adequately or manure instead of fertilizers.Restricting the use of non- biodegradable material can also be a solution.
Posted by Best Player 7 years, 3 months ago
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Posted by Best Player 7 years, 3 months ago
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Anashwara Nair 7 years, 3 months ago
Posted by Shobhit Dubey 7 years, 3 months ago
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Posted by Manoj Kumar 7 years, 3 months ago
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Anashwara Nair 7 years, 3 months ago
Shobhit Dubey 7 years, 3 months ago
Posted by Manoj Kumar 7 years, 3 months ago
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Krrish Kumar 7 years, 3 months ago
Deepanshu Birhman 7 years, 3 months ago
Posted by Anil Patil 7 years, 3 months ago
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Posted by Harshitha Pullepu 7 years, 3 months ago
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Posted by Anushka Datal 7 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
Unsaturated solutions are those solutions which contain less amount of solute in them than that of the actual amount of solvent which can be dissolved. If more amount of solutes in a solution, then that solution will be considered as a saturated.
Posted by Bindu V 7 years, 3 months ago
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Shatakshi Mishra 7 years, 3 months ago
Posted by Best Player 7 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
The process by which heat is transferred from the hotter parts of a liquid to its colder parts by the movement of the liquid itself is known as convection. For e.g. water is a good convector. When water is heated, the water near the flame gets hotter and rises up. The cold water from the sides moves down towards the source of heat. This water also gets hot and rises up. The hand above the flame also becomes hot due to convection.
Posted by Best Player 7 years, 3 months ago
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Posted by Best Player 7 years, 3 months ago
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Posted by Kuber Pratap 7 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
In human beings, air is taken into the body through the nostrils, is filtered by fine hairs that line the passage. When air passes through the nasal passage, the dust particles and other impurities present in it are trapped by nasal hair and mucus so that clean air goes into the lungs. From here, the air passes through the throat and into the lungs. Trachea does not collapse even when there is no air in it because it is supported by rings of soft bones called cartilage.
Within the lungs, the passage divides into smaller and smaller tubes which finally terminate in balloon-like structures which are called alveoli. The alveoli provide a surface where the exchange of gases can take place. The walls of the alveoli contain an extensive network of blood-vessels. When we breathe in, the ribs are lift up and the diaphragm flattens which increases the size of the chest cavity. Because of this, air is sucked into the lungs and fills the expanded alveoli. The blood brings carbon dioxide from the rest of the body for release into the alveoli, and the oxygen in the alveolar air is taken up by blood in the alveolar blood vessels to be transported to all the cells in the body. During the breathing cycle, when air is taken in and let out, the lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released.
Posted by Shreyas Shreyu 7 years, 3 months ago
- 2 answers
Posted by Aastha Maurya 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
. The inner lining wall of the stomach produces dilute hydrochloric acid, gastric mucosa and digestive juices. Dilute hydrochloric acid kills microbes that enter with the food.
Posted by Aadi Jain 7 years, 3 months ago
- 2 answers
Yogita Ingle 7 years, 3 months ago
Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.
Posted by Aditi Vats 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
The blood platelets are responsible for the clotting of the blood. When some injury occurs blood starts flowing. But it clots on its own. If there are no platelets, the blood will not be able to clot and keep on flowing. Huge loss of blood ultimately causes death.
Posted by Mehu Menus 7 years, 3 months ago
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Posted by Kapil Kapil J 7 years, 3 months ago
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Posted by Deepshikha Yadav 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Soil Erosion: Removal of topsoil by weathering agents; such as wind, water and ice is known as soil erosion. Soil erosion affects the fertility of soil, as humus present in the soil is eroded along with soil. It is important to prevent soil erosion.
Soil Pollutions – The soil is an essential nutrient for the existence of plants and for agriculture. It is very important for maintaining an ecological balance in nature and keeping our environment green. But with the current trend of increasing population, there is a consequent increase in demand for land and other resources.
Percolation Rate of Water: Amount of water drained through water in unit time is known as percolation rate of water in soil. Percolation rate of water can be calculated using the formula given here.
Percolation rate (mL/min) = Amount of water in mL/Time taken to percolate
The percolation rate of water in sandy soil is fastest and in clayey soil is slowest.
Posted by Deepshikha Yadav 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
Soil Pollutions – The soil is an essential nutrient for the existence of plants and for agriculture. It is very important for maintaining an ecological balance in nature and keeping our environment green. But with the current trend of increasing population, there is a consequent increase in demand for land and other resources.
Posted by Anu Jaswal 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
Thunderstorm: Many a times, rain is associated with lightning. Rain with lightning is called thunderstorm. This happens mostly in the summer. Thunderstorm occurs frequently in hot and humid tropical areas, such as India. In summer, the air rises up along with lot of moisture. After rising up to a certain height water vapour cools down and starts coming down in the form of water droplets. The swift drifting of water droplets creates electricity among clouds. This manifests in the form of lighting and sound. This is known as thunderstorm.
Posted by Biswasi Naik 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
|
Infectious diseases |
Non- infectious diseases |
|
1. Caused due to attack of pathogens |
1. Caused by factors other than pathogens |
|
2. Caused due to extrinsic factors |
2. Caused due to intrinsic factors |
|
3. Transmitted from one person to another |
3. Do not get transmitted from one person to another |
|
4. Transmission of diseases occurs through direct contact or some medium (air, water, vectors) |
4. Transmission in case of hereditary diseases is from parent to offspring |
|
5. Community hygiene can reduce the occurrence of these diseases |
5. Community hygiene is ineffective in reducing the occurrence of these diseases |
|
E.g. Cholera, Malaria |
E.g. Diabetes, Goitre |
Posted by Biswasi Naik 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
Activity:
· Take some camphor or ammonium chloride.
· Crush the compound taken and put it in a china dish
· Put an inverted funnel over the china dish
· Put a cotton plug on the stem of the funnel
· Heat the china dish slowly and observe.
Observation: A change of state directly from solid to gas without changing into liquid state (or vice versa) is observed, this phenomenon is called sublimation.
Posted by Biswasi Naik 7 years, 3 months ago
- 1 answers
Yogita Ingle 7 years, 3 months ago
The momentum is defined as the product of its mass and velocity.
Linear Momentum = mass × velocity
S.I Unit of Momentum = S.I Unit of mass × S.I Unit of velocity
S.I Unit of Momentum = kg × m.s-1
S.I Unit of Momentum = kg.m.s-1
Posted by Biswasi Naik 7 years, 3 months ago
- 2 answers
Yogita Ingle 7 years, 3 months ago
In a qualitative way, the tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called inertia.
Example: The dust particles fly away from the blanket when we jerk it due to the inertia of rest.
Sonali Aggarwal 7 years, 3 months ago
Inertia is the resistance, of any physical object, to any change in its velocity. This includes changes to the object's speed, or direction of motion.
Posted by Biswasi Naik 7 years, 3 months ago
- 2 answers
Yogita Ingle 7 years, 3 months ago
Newton's first law of motion states that an object remains in a state of rest or of uniform motion in a straight line unless compelled to change that state by an applied force.
In other words, all objects resist a change in their state of rest or motion.
Sonali Aggarwal 7 years, 3 months ago
First Law Of Motion. Isaac Newton's first law of motion, also known as the law of inertia, states that an object at rest will stay at rest and an object in motion will stay in motion with the same speed and direction unless acted upon by unbalanced force.
Posted by Biswasi Naik 7 years, 3 months ago
- 2 answers
Yogita Ingle 7 years, 3 months ago
Law of conservation of linear momentum is a extremely important consequence of Newton's third law of motion in combination with the second law of motion. According to law of conservation of momentum
When two or more bodies acts upon each other their total momentum remains constant provided no external forces are acting
So, Momentum is never created or destroyed.
Sonali Aggarwal 7 years, 3 months ago
For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
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Hima Bindu 7 years, 3 months ago
1Thank You