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Yogita Ingle 7 years, 11 months ago
Food is essential for our body to maintain a healthy heart, active brain, optimally working muscles and other organs. Food provides us energy and protect against from diseases. Food is made up of nutrients. These nutrients we get from variety of food items. All food we eat comes either from plants or animals.
Different types of fruits contain different nutrients, so it is important to eat a variety of fruits. They keep us healthy and strong.
Vegetables are good source of many nutrients. Vegetables like broccoli, spinach, tomatoes and garlic are considered to be very nutritious. Other vegetable includes drumsticks, potato, tomato, radish, turnip, cauliflower, capsicum, onion, spinach etc.
Cereals are grains used for food. Cereal includes wheat, oats, bajra (millets), maize and rice etc. Cereals are very important part of human diets is rich nutrients.
The main pulses include chickpeas, kidney beans, red gram, black gram (urad), red lentil, green. Pulses are used as foods such as dal, sambhar, curry etc.
Nuts are very nutritious and give lot of energy. They are considered healthy snacks. Nuts include pistachios, walnut, raisins, peanuts, almond, cashew nut etc.
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Yogita Ingle 7 years, 11 months ago
Locomotion of earthworm is the outcome of muscular actions in them. Continuous expansion and contraction of muscles help them to move. Hence, earthworms make small moves using muscles alone.
Snails have a characteristic shell on their back. The hard external shell is a non-bony structure called exoskeleton. It doesn’t help in movements but is a shield from predators and damages.
Fish is an aquatic animal adapted to live in water. Fish have a streamlined body structure which help them to move smoothly with the flow of water. Muscles and fins on the body and tail help keep the balance.
Posted by Shareyash Patil 7 years, 11 months ago
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Yogita Ingle 7 years, 11 months ago
Elbow joint is composed of hinge joint. This type of a joint allows the movement in one plane only. These joints allow movement up to 180° only. Hence, we cannot move our elbows backwards.
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Yogita Ingle 7 years, 11 months ago
The thin strands are called as yarns which are made from fibre. Spinning is the process of making yarn. The process where the cotton wool are drawn out and being twisted. This process brings all the fibre together to form a yarn. Fabrics are prepared from the yarns through weaving and knitting.
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Yogita Ingle 7 years, 11 months ago
In the atmosphere, air consists of 78 percent of nitrogen gas. Nitrogen is an odorless, colorless gas symbolized by the letter N on the periodic table. Every cellular component is made up of nitrogen as one of the major components. All living organisms including plants, animals, humans and even microorganisms use nitrogen for their life processes. Despite all these, the concentration of nitrogen in the atmosphere is still 78 percent, although it is continuously being consumed.
Posted by Muskan Agarwal 7 years, 11 months ago
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Posted by Muskan Agarwal 7 years, 11 months ago
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Yogita Ingle 7 years, 11 months ago
Earthworm is a small annelidan which mostly lives in the soil. Earthworms are small worms which can move easily on hard surfaces. Earthworms move with help of tiny, stiff hair-like projections called bristles. Every body segment of the earthworm possesses setae which help in their movement. Setae get firm hold on the ground. Earthworms move forward by repeated contractions and relaxations of their muscles in the skin. A slimy substance secreted by the earthworm helps in its movement.
Posted by Muskan Agarwal 7 years, 11 months ago
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Yogita Ingle 7 years, 11 months ago
Acrylic resembled wool and hence is also called synthetic wool. It is cheaper and more durable than wool, and is easier to wash and maintain.
Characteristics of Synthetic Fibres:
(i) They are less expensive.
(ii) They are readily available.
(iii) They can be easily washed.
(iv) They are easy to maintain.
Posted by Om Mahajan 7 years, 11 months ago
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Sonu Kumar 7 years, 11 months ago
2Thank You