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Posted by Gaurav Shahwal 6 years ago
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Yogita Ingle 6 years ago
The excretory system performs many functions such as:
- Helps eliminate waste products such as urea, uric acid ammonia, and other products via urine.
- It helps maintain the osmotic level of blood and plasma
- It helps maintain the electrolyte balance in the body
- And it also helps in the metabolism of those drugs that do not get metabolized in the liver.
Posted by Sagar Singh 6 years ago
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Yogita Ingle 6 years ago
Exothermic Reaction
The chemical reactions which proceed with the evolution of heat energy are called exothermic reactions.
Examples:
Carbon burns in oxygen to form carbon dioxide and heat energy is produced.
C + O2 → CO2 + Heat
Water added to quick lime (calcium oxide), slaked lime (calcium hydroxide) is produced with a lot of heat energy.
CaO + H2O → Ca(OH)2 + Heat
Posted by Suriya Jahan 6 years ago
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Meghna Thapar 6 years ago
Combination Reaction: When two or more substances combine to form a single product, the reaction is known as a combination reaction.For example: In the laboratory, iron sulphide is prepared by mixing iron and sulphur.
Fe(s) +S(s) FeS(s)
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Oxygen is released in the atmosphere during photosynthesis.
Photosynthesis is the process by which plants and other organisms generate carbohydrates and oxygen from carbon dioxide and water using light energy, with the help of chlorophyll.
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Agriculture is the art and science of cultivating the soil, growing crops and raising livestock.
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Posted by Pratik Kanungo 6 years ago
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Yogita Ingle 6 years ago
Molecular movements are very necessary to provide the different kinds of Molecules through the entire body of the organism for maintaining and repairing the structure of the organism body.
Diffusion is the essentially the movement of molecules from the region to region in biology the movement of molecules throughout the body of the Organism is no dad is known as diffusion.
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Yogita Ingle 6 years ago
Reflex action is the extremely quick, automatic, sudden action in response to something in the environment.
Example- i) Immediately pulling back of fingers after touching a hot plate.
ii) Closing of eyes when flashed with high intensity light.
iii) Salivation when hungry.
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