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Sia ? 6 years, 4 months ago
Scorpions have special structures to escape from heat fennec Barod animals like snakes go into the borrows in the sand to escape from heat .
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Yogita Ingle 6 years, 4 months ago
The alpaca are the most common animals are used for the production of wool .
Posted by Ark Pasawala 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Litmus: Litmus is extracted from Lichens. Lichen is a composite organism. Lichens consist of fungi and algae living in symbiotic relationship.
Litmus is a purple coloured liquid in distilled water. Litmus comes in the form of strips of two colours. One is called blue litmus paper and another is called red litmus paper. Litmus liquid and litmus paper are used to detect the acidic or basic nature of a substance.
Posted by Anjali Sharma 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Wind vane is an instrument used to measure the direction of the wind, whereas anemometer is an instrument used to measure the speed of the wind
Posted by Piyush Hotchandani 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole as shown in figure. Inside the food vacuole, complex substances are broken down into simpler ones which then diffuse into the cytoplasm. The remaining undigested material is moved to the surface of the cell and thrown out.
Posted by Preeti Chaudhary 6 years, 4 months ago
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Sia ? 6 years, 4 months ago
At sea-shore during the day cold air from the sea moves towards the beach because the land gets more heated than the sea water. Hot air above the land rises up, and cold air from the sea moves towards the land beach. This is called sea breeze as shown in Fig. (a).
During the night cold air from the land moves towards the sea because the land cools more quickly than the sea water. So hot air above the sea rises up and cold air from the land moves towards the sea. This is called land breeze as shown in Fig. (b).
Kena Gandhi 6 years, 4 months ago
Posted by Armaanpreet Singh 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Crystals of copper sulphate are prepared by the method of crystallization. It is an example of physical change. The process is as follows:
(1)A cupful of water is taken in a beaker and a few drops of dilute sulphuric acid are added in it.
(2)The water is then heated and when it starts boiling, copper sulphate powder is added slowly with stirring.
(3)Copper sulphate powder is added continuously till no more powder can be dissolved.
(4)Then solution is filtered and allowed to cool down.
(5)Do not disturb the solution, when it is cooling.
(6)Crystals of copper sulphate slowly form at the bottom of the beaker.
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Sia ? 6 years, 4 months ago
Uses of acids:
- they are used in laboratory.
- they are used in manufacturing of fertilizers , pesticides , dyes , detergents , explosives , battery etc.
Uses of bases:
- sodium carbonate is used as washing soda and for softening hard water .
- calcium hydroxide is used in the manufacture of bleaching powder .
Posted by Lgnite Abinash 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Two methods to find out wind direction at a given place are
(i) An instrument called anemometer can be used to find the direction and speed of the wind.
(ii) Hold a strip of paper outside. The direction in which the paper is blowing, is the direction in which the wind blows.
Posted by Raman Kumar Mishra 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Diffused Reflection: When light falls on a rough surface (like a stone, your body, your clothes etc), all the parallel incident rays are not reflected parallel to each other. This is called Diffused Reflection.
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Sia ? 6 years, 4 months ago
Heat is a form of energy. On the other hand, temperature is the degree of hotness and coldness of a substance. Temperature can be changed by changing providing heat energy to the body.
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Meghna Thapar 5 years, 10 months ago
There are two main parts in the respiration:
Aerobic and Anaerobic respiration:
- The breakdown of glucose food occurs with the use of oxygen it is called aerobic respiration. The glucose food is completely broken down into carbon-dioxide and water with the use of oxygen and energy is released. All the living organisms like birds, lizards, snakes, earthworms, insects and most of the plants carry out this respiration.
- The breakdown of glucose food occurs without the use of oxygen it is called anaerobic respiration. The microscopic organisms like yeast and certain bacteria obtain energy by anaerobic respiration. In the absence of oxygen, glucose breaks down into alcohol and carbon dioxide. Yeast is a single celled organism. It is used to make alcoholic drinks and bread. Yeast converts glucose into alcohol. This alcohol is used in making wine and beer. It also produces carbon dioxide gas which makes the bread rise. Anaerobic respiration produces much less energy because partial breakdown of glucose occurs in absence of oxygen.
Posted by Saarbiab 181735 Das 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Quantum mechanics is the branch of physics that deals with the behavior of matter and light on a subatomic and atomic level. It attempts to explain the properties of atoms and molecules and their fundamental particles like protons, neutrons, electrons, gluons, and quarks.
Posted by Mahendra Thakur 6 years, 4 months ago
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Home Stay 6 years, 3 months ago
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