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Yogita Ingle 6 years, 10 months ago
Mountaineers carry oxygen cylinder while climbing high mountains to avoid suffocation. As we go higher and higher, at high altitudes, amount of oxygen present in the atmosphere is determined by atmospheric pressure. Though the concentration of oxygen is 21% and is constant throughout the air, the layer of air at heights above than 12000 feet becomes thinner and thinner. This decreases the number of oxygen molecules per breath making the person suffocated at high altitudes.
Siddhi Chopade 6 years, 10 months ago
Posted by Akhouri Kanishk 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
Reproduction is the process by which organisms produce their offspring and the set of organs required for this process is called the reproductive system. Every other organ in the human body is identical in shape and function both in males and females except the organs of the reproductive system.
Posted by Harleen Kaur 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
Based on food they eat, animals are grouped into three groups namely, herbivores, carnivores, omnivores and decomposers.
a) Herbivores: Animals which eat only plants are called as herbivores. These are also called as grass-eating animals. e.g. Cow, sheep, goat, deer, buffalo, camel etc.
b) Carnivores: Animals which eat only small animals are called as carnivores. These are also called as flesh-eating animals. e.g. Tiger, lion, jackals, vultures etc.
c) Omnivores: Animals which eat both plants and animals are called as omnivores. e.g. Human being, bear, crow etc.
d) Decomposers: Organisms which feed on dead plants, dead animals and rotten materials for their food are called as decomposers.
Posted by Smriti Gupta 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
Animals which eat only grass and plant products are called herbivores. Cow, Elephant, Camel, Deer, Goat, etc. are examples of HERBIVORES.
Posted by Kamlesh Rani 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
There are mainly two sources of ingredients of various food items:
(a) Plants: Plants provide us vegetables, pulses, fruits, cereals, grains etc.
(b) Animals: Animals provide us meat, eggs, and milk etc
Posted by Payal Barman 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
Food: All living things need energy to do work and for growth and repair. They get this energy from the food. Our body uses this energy for doing work. We eat different varieties of food like rice, bread, vegetables, eggs, butter, sweets, cheese, etc.
Posted by Mayengbam Roma 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
The importance of food is:
(i) They are converted into energy which is required to do various activities.
(ii) It helps in growth of living organisms.
(iii) It helps in the process of repair and replace of damaged parts of the body of living organisms.
(iv) It safeguards us from various diseases and infections.
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Kaushik Madineni 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
Food is essential for all the living organisms. Plants prepare their own food and store in their special organs as fruits, tubers, seeds etc. Animals and human beings depend on this stored food of plant. Bigger animals depend on smaller animals for their food. Human beings also depend on animals for their food.
Posted by Rachna Rai 6 years, 10 months ago
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Yogita Ingle 6 years, 9 months ago
Bears are example of omnivores as they eat both berries and meat.
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Yogita Ingle 6 years, 10 months ago
Products obtained from milk are
Milk, curd, paneer, ghee
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Yogita Ingle 6 years, 10 months ago
Deficiency of proteins in the diet results in the development of diseases related to PEM. Kwashiorkor and Marasmus are two types of diseases related with protein energy malnutrition.
Deficiency of minerls in the diet results in the development of diseases related to Iron deficiency , Iodine deficiency, Calcium deficiency ,Phosphorous deficiency
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Yogita Ingle 6 years, 10 months ago
All birds are warm-blooded, or endothermic, animals. Birds are vertebrates because they have backbones. All birds have a four-chambered heart, a characteristic they share with mammals. All birds lay hard-shelled eggs. Birds have only two legs. Their forelimbs have become modified into wings for flying.
Many of a bird's bones are hollow which makes birds' bodies lightweight. Flying birds have large chest muscles that move the wings.
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