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Posted by Deepisha Karki 6 years, 8 months ago
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Yogita Ingle 6 years, 8 months ago
Copper sulfate is a term that can refer to either of the following chemical compounds – cuprous sulfate (Cu2SO4), or cupric sulfate (CuSO4). However, the latter is the preferred compound described by the term ‘copper sulfate’. The systematic name for CuSO4 is copper(II) sulfate, but it is also referred to as blue vitriol, Roman vitriol, the vitriol of copper, and bluestone.
Posted by Preety Maisnam 6 years, 8 months ago
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Yogita Ingle 6 years, 8 months ago
The term SI unit is the abbreviation of the French word Système International. SI or the International System of Units is now the most widely used system of measurement. The SI units have been in existence since 1960. This has replaced the varying measurement units and has made it easier to express the units universally.
Posted by Vivek Kumar 6 years, 8 months ago
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Pratima Dash 6 years, 8 months ago
Yogita Ingle 6 years, 8 months ago
The planets all formed from this spinning disk-shaped cloud, and continued this rotating course around the Sun after they were formed. The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
Posted by Md Ansari 6 years, 8 months ago
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Naveen Kumar 6 years, 8 months ago
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Anushka Saxena 6 years, 8 months ago
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Meghna Thapar 5 years, 10 months ago
Sometimes fertilizers get washed away due to excessive irrigation and are not fully absorbed by the plants. This excess fertilizer then leads to water pollution.
Continuous use of fertilizers in an area can destroy soil fertility because the organic matter in the soil is not replenished and micro-organisms in the soil are harmed by the fertilizers used.
Advantages of Fertilizer over manure:
(i) Fertilizers are very rich in plant nutrient whereas manure contains small amounts of essential plant nutrients.
(ii) Fertilizers are soluble in water whereas manure is not soluble in water.
Posted by Vivek Kumar 6 years, 8 months ago
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Siddhi Gupta 6 years, 8 months ago
Yogita Ingle 6 years, 8 months ago
- Viruses are smaller than any known cell.
- Viruses can only be seen with electron microscope.
- Viruses can reproduce only inside the bodies of other organisms, which mean they need a host.
- A virus is like a non- living thing outside the body of other organisms. Therefore, it is a borderline between a living and a non- living thing.
Posted by Falak Dhummi 6 years, 8 months ago
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Yogita Ingle 6 years, 8 months ago
A utility is a measure of how much one enjoys a movie, favourite food, or other goods.
Characteristic of Utility
- It is dependent upon human wants.
- It is immeasurable.
- A utility is subjective.
- It depends on knowledge.
Posted by Kanchanendu Sinha 6 years, 8 months ago
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Yogita Ingle 6 years, 8 months ago
- The first step of cultivation is preparation of soil. This is done by loosening and turning the soil. A plough is used for this purpose. If the soil becomes too hard then farmer may resort to watering the soil before ploughing.
- Traditionally, animal-drawn ploughs have been used by farmers. Now-a-days, tractor-drawn ploughs are used for this purpose. A tractor helps in saving time and labour.
- The soil may contain many big lumps even after ploughing. The lumps are broken with the help of a hoe. Sometimes the farmer may add manure before ploughing; in order to properly mix the manure with soil.
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Yogita Ingle 6 years, 8 months ago
Ruminants have one stomach with four compartments or chambers for digestion of food
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