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Posted by Jogendra Singh Karan 5 years, 10 months ago
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Posted by Chota Chauhan 5 years, 10 months ago
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Meghna Thapar 5 years, 9 months ago
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds. Examples of physical change include changes in the size or shape of matter. Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.
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Garima Vijay 5 years, 10 months ago
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Rajesh More 5 years, 10 months ago
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Mayank Krishan Kashyap 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Autotrophic Nutrition:
The autotrophs acts as the producers and prepare their own food by using carbon dioxide from air, water from the roots, sunlight and chlorophyll for e.g., chromatium, rhodobacter capsulatus. Some autotrophs also prepare their food by harnessing energy from the oxidization of inorganic chemicals for e.g., methane bacteria. Two types of autotrophic nutrition are phototrophic nutrition and chemoautotrophic nutrition.
Heterotrophic Nutrition:
Some organisms which cannot prepare their own food and depend on green plants and other organisms to convert high energy into their food. Examples: protozoans, liver fluke, decomposer protists, symbiodinium on corals. These could be classified as parasitic, holozoic, saprophytic and mixotrophic.
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Meghna Thapar 5 years, 9 months ago
The 'Middle Ages' are called this because it is the time between the fall of Imperial Rome and the beginning of the Early modern Europe. The Dark Ages are given this name because Europe was in disarray in comparison to the orderliness of classical antiquity and life was short and poor. Features such as migration of people, invasions, population distribution, and deurbanization characterized this period. The medieval ages had three periods, which include the antiquity, the medieval periods, and the modern period, all of which exhibited different characteristics.
Posted by Hanamanta Bandivaddar 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
No, Humans cannot survive only on raw, leafy vegetables, or grass. It is because the grass is rich in cellulose, which is a type of carbohydrate that humans are not able to digest due to the absence of cellulose-digesting enzymes.
Posted by Hatshita Gautam 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Chandragupta Maurya (321-;297 BCE) was the founder of the Mauryan dynasty in India. The empire set up by him was the first and one of the greatest empires of ancient India.
Posted by Shubh Agrawal 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
- Oceanic crust is thinner and denser than continental crust.
- Oceanic crust is more mafic, continental crust is more felsic.
- Crust is very thin relative to Earth’s radius.
Posted by Mohammad Nouman 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
One such human response is the construction of large dams. ... But ashuman technology expands, people are able to adapt to the constraints once placed by the natural environment. Besides technological adaptation,human culture has increasingly modified the natural environment, shaping it to its needs.
Posted by Riya Sahu 5 years, 10 months ago
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Tanya Garg 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Crop rotation is the systematic planting of different crops in a planned sequence over several years in the same growing space. It has following advantages:
1. It controls pests and weeds to a great extent.
2. Two or three crops can be grown in a yewar with good harvests.
3. Soil utilization is complete.
4. It reduces the great dependence on fertilizers.
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