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Yogita Ingle 5 years, 10 months ago
Haustorium is the portion of a parasitic fungus that draws nutrients from its host's tissues. The plural is haustoria.
Posted by Saudagar Prasad 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Sanitation refers to public health conditions such as drinking clean water, sewage treatment, etc. All the effective tools and actions that help in keeping the environment clean come under sanitation.
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Focus is the point where light rays originating from a point on the object converge. The principal focus is defined as the point where a beam parallel to the principal axis appears to diverge converges from a point on the principal axis after passing through the lens.
Posted by Bheewani Sinha 5 years, 10 months ago
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Posted by Rudra Vvs 5 years, 10 months ago
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When sun shines on your skin, it destroys the melanin as well. But since your skin is alive, it can respond to the sun's damage. Your skin cells make more melanin and your skin becomes darker. Melanin is produced by skin cells when they are exposed to the sun. The more sun exposure, the more melanin is produced. There are two types of melanin, eumelanin which gives skin a brown colour (tan) and pheomelanin which gives skin a red colour (burn). Regular sun exposure (e.g. every day) is associated with tanning.
Posted by Sonu Sonu 5 years, 10 months ago
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The electric fuse has a thin wire with a low melting.If more amount of electricity is passed from fuse then heat will be produced and the fuse melts.This makes the circuit opened then the current will not pass. This is the working of an electric fuse.
Posted by Gani Bhai 5 years, 10 months ago
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Sewage is waste water released by homes, industries, hospitals, offices and other users. It also includes rainwater that has run down the street during a storm or heavy rain. The water that washes off roads and rooftops carries harmful substances with it. Sewage is a liquid waste which has dissolved and suspended impurities as contaminants or pollutants.
Posted by Shambhu Sharma 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
Wind Currents Are Generated Due To Uneven Heating On The Earth:
Wind is the movement of air which depends on the difference in air pressure in the two regions. The greater the difference in air pressure the faster the air moves.
There are following situations:
- Uneven heating between the equator and the poles: The regions close to the equator get the maximum heat from the Sun. The air in these regions gets heated and warm. The warm air rises in the equatorial regions of the earth creating an area of low air pressure and the cooler air from the regions in the 0–30 degrees latitude belt on either side of the equator moves in. This makes the wind to blow from the north and the south towards the equator. At the poles, the air is colder than that at latitudes about 60 degrees. The warm air at these latitudes rises up and the cold wind from the Polar Regions rushes in, to take its place. In this way, wind circulation is set up from the poles to the warmer altitudes. The winds would have flown in the north-south direction from north to south, or from south to north. A change in direction is however, caused by the rotation of the earth on its axis.
- Uneven heating of land and water: The land near the equator of earth heats up faster than the water in oceans in summers. The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land. These are monsoon winds. The monsoon winds carry lot of water from the oceans and bring large amount of rains on land. The process in which the winds coming from the oceans carry a lot of water vapour and bring rains is a part of the water cycle in nature. The summer monsoon is very important to the farmers because most of the annual rainfall occurs at this time and helps in growing crops.
Posted by Priyanshi Gupta 5 years, 10 months ago
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Indicators that are obtained from naturally occurring substance are called NATURAL INDICATORS. Example: litmus, turmeric, China rose, etc.
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Forests are called nature’s lungs or green lungs because green plants release oxygen during photosynthesis.
Posted by Molisha Gakhar 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
Liver is the largest gland in human body. It is located in the right upper quadrant of the abdominal cavity. The liver has many functions and plays a large role in human metabolism and digestion. Liver secretes liquid called bile which helps in the digestion of fats and converts them into small droplets.
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Posted by Alok Suhane 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
There are some ways in which we can contribute in maintaining sanitation at public places like we should not scatter litter at public places.
We should play a keen role in keeping our environment clean and healthy. We must realise our responsibility in maintaining the water sources in a healthy state.
Posted by Harleen Kaur 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
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.
When we breathe out, the ribs are flatten and the diaphragm lifts up which decreases the size of the chest cavity. Because of this, air is expelled out of the lungs.
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Yogita Ingle 5 years, 10 months ago
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