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Ask QuestionPosted by Prakhar Pratyush 7 years, 8 months ago
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Posted by Priya Semwal 7 years, 8 months ago
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Posted by Priya Semwal 7 years, 8 months ago
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Meghna Thapar 5 years, 11 months ago
Synthetic fibers are more durable than most natural fibers and will readily pick-up different dyes. In addition, many synthetic fibers offer consumer-friendly functions such as stretching, waterproofing and stain resistance. Natural fibers tend to be much more sensitive than synthetic blends.
Posted by Prince Sahu 7 years, 8 months ago
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Meghna Thapar 5 years, 11 months ago
Some common mammalian omnivores include raccoons, opossums, skunks, pigs, rats, badgers, and most bear species. There are also several omnivorous birds, including chickens, crows, and robins. Some reptiles, such as lizards and turtles, are also omnivorous.
Herbivores include deer, rabbits, cows, sheep, goats, elephants, giraffes, horses, and pandas.
Examples of Carnivores: Lions and tigers, Praying mantis, Spiders, Venus fly-trap, Eagles, Owls.
Posted by Akash Biswas 7 years, 8 months ago
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Posted by Payel Saha 7 years, 8 months ago
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Akash Biswas 7 years, 8 months ago
Sonali Aggarwal 7 years, 8 months ago
We are standing on the earth due to it gravitational pull.It is this gravitational pull which makes anything fall on the earth and not anywhere else.
Posted by Rahil Maraskolhe 7 years, 8 months ago
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Posted by Shiladitya Dash 7 years, 8 months ago
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Meghna Thapar 6 years ago
- We get different ingredients for various dishes from plants and animals.
- The components of food are carbohydrates, fats, proteins, vitamins, minerals, water and roughage.
- Each component has its own function in the body.
- Carbohydrates (starch) are found in cereals like wheat and rice, and potatoes.
- Fats are found in fatty substances like oils and ghee.
- Proteins are mainly found in pulses.
- Minerals and vitamins are required in minute quantities by our body to keep us free from diseases and helps in proper growth of the body.
Posted by Ansh Singh 7 years, 8 months ago
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Meghna Thapar 5 years, 11 months ago
Deficiency Diseases:
Deficiency diseases occur when one or more nutrients are not present in our diet for a long period of time. Thus, diseases occur due to the deficiency of one or more nutrients. All deficiency diseases can be prevented by taking a balanced diet.
Diseases/disorders caused due to the deficiency of minerals/vitamins:
- Kwashiorkar: It is caused by the deficiency of proteins in small children. The main symptoms are:
- The skin of the child cracks and becomes red.
- The hair of the child becomes red.
- The stomach of the child becomes swollen and bulges out.
- The growth becomes stunted.
- The child becomes weak and irritable.
- Marasmus: It is a carbohydrate as well as protein deficiency disease which occurs in infants. The main symptoms are:
- The child becomes very lean and thin.
- The child is reduced to just skin and bones.
- The ribs of the child look prominent.
- The growth of the child stops.
- Night blindness: It is caused due to the deficiency of vitamin A. Severe deficiency of vitamin A may lead to complete blindness. In this disease, a person is not able to see in dim light.
- Beri-beri: It is caused due to the deficiency of vitamin B1.
The main symptoms are:
- The muscles of the person become very weak.
- The person has little energy to do work.
- The person may suffer from heart failure and become paralysed.
- Scurvy: It is caused due to the deficiency of vitamin C. Symptoms of scurvy includes:
- Bleeding from gums
- Loosening of teeth
- Wounds do not heal easily.
- Rickets: Rickets is caused due to the deficiency of vitamin D. The main symptoms of this disease are bow legs (bent legs) and a pigeon type chest.
- Bone and tooth decay: The deficiency of calcium in the diet of children leads to brittle bones and tooth decay.
- Goitre: Goitre is caused by the deficiency of iodine in the diet for a long period of time. It is the abnormal enlargement of thyroid gland situated in the neck region. The main symptom is that the neck of the person appears to be swollen.
- Anaemia: It is caused by the deficiency of iron. The main symptoms are:
- The person looks pale and tired.
- The nails turn white.
- The person looses weight.
Posted by Manoj Singh 7 years, 8 months ago
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Posted by Samarth Das 7 years, 8 months ago
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Posted by Rohini Bangotra 7 years, 8 months ago
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Posted by Dakpi Bam Pi 7 years, 8 months ago
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Posted by Anshuman Dash 7 years, 8 months ago
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Meghna Thapar 5 years, 11 months ago
Aquatic animals have gills which enable them to use dissolved oxygen in water for breathing. Some sea-animals like dolphins and whales do not have gills. They have nostrils called blowholes which are located on the upper part of their head and helps in breathing. Dolphins and whales breathe in air through blowholes when they swim near the surface of water. They close their flaps after breathing and dive into the sea. They can stay in water for long without breathing.
The submerged plants have narrow and ribbon-like leaves which can bend in the flowing water of rivers and streams and hence do not obstruct the flow of water. In some submerged plants, the leaves are highly divided so that the water can easily pass through them.
Posted by Anshuman Dash 7 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 11 months ago
Aquatic animals have gills which enable them to use dissolved oxygen in water for breathing. Some sea-animals like dolphins and whales do not have gills. They have nostrils called blowholes which are located on the upper part of their head and helps in breathing. Dolphins and whales breathe in air through blowholes when they swim near the surface of water. They close their flaps after breathing and dive into the sea. They can stay in water for long without breathing.
The submerged plants have narrow and ribbon-like leaves which can bend in the flowing water of rivers and streams and hence do not obstruct the flow of water. In some submerged plants, the leaves are highly divided so that the water can easily pass through them.
Posted by Abhay Bansal 7 years, 8 months ago
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Noor Saini 7 years, 8 months ago
Posted by Dipesh Goyal 7 years, 8 months ago
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Posted by Amrendra Singh 7 years, 8 months ago
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Meghna Thapar 6 years ago
The magnetite attracted pieces of iron towards itself. When a strip of magnetite was suspended from a thread so that it could rotate freely and aligned itself in the north-south direction.
Posted by Amrendra Singh 7 years, 8 months ago
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Aadrica Das 7 years, 8 months ago
Posted by Vibhor Mangal 7 years, 8 months ago
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Meghna Thapar 6 years ago
The jute plants are harvested from the fields at the flowering stage. The stems of the harvested plants are immersed in water for a few days and the fibres are left behind when the stems rot. The jute fibres are then separated from water by hand.
Posted by Higehi Dedgi 7 years, 8 months ago
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Posted by Abhijeet Chaudhary 7 years, 8 months ago
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Posted by Harmeet Singh 7 years, 8 months ago
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Posted by Rupsing Gond 7 years, 8 months ago
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Ayush Yadav 7 years, 8 months ago
Amrendra Singh 7 years, 8 months ago
Anya Vishwakarma 7 years, 8 months ago
Abhijeet Chaudhary 7 years, 8 months ago
Posted by Kartika Duhan 7 years, 8 months ago
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Posted by Aakriti Mishra 7 years, 8 months ago
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Samarth Das 7 years, 8 months ago
Posted by Ashish Kumar Jena 7 years, 8 months ago
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Yogita Ingle 7 years, 8 months ago
Function of Blood:
- Blood transports oxygen from the respiratory surface i.e. lungs, buccal cavity to body tissues and carbon dioxide from tissue to respiratory surface.
- Blood transports digested food to different cells of the body.
- Blood transports the waste products of cells and organs to the kidneys, lungs, skin and intestine, so that they may be eliminated.
- Hormones produced by endocrine glands are distributed to the vital tissues by the blood.
- Blood maintains body temperature constant and distributes and exchanges water between cytoplasm of cells.
- To prevent excess bleeding, blood-platelets and some protein form clot so as to prevent further bleeding.
Posted by Tajinder Kaur Sandhu 7 years, 8 months ago
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Posted by Rupali Kar 7 years, 8 months ago
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Samridhi Goyal 7 years, 8 months ago
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Prakhar Pratyush 7 years, 5 months ago
1Thank You