Effects of Heat
We heat raw food to soften it. We freeze water into ice by cooling it in refrigerator. When we boil water in a kettle we observe the steam oozing from the mouth of the kettl..
Question 6
Question: The theme of your school magazine this year is 'Generation Gap'. You write an article for it in a light-hearted vein, on the major source of conflict between yourself and your parents - eating habits. Write this article using your own ideas and those from the unit 'Childre..
Ingestion
Taking in of food or eating. The food is taken in as big or small particles. This may be by specialised organs such as mouth in higher animals or through the general body surface with the help of structures such as pseudopodia in lower organisms (like amoeba). Ingesti..
Ingestion
Taking in of food or eating is termed ingestion. The food taken in can be big or small particles. There may be by specialised organs such as mouth in higher animals and through the general body surface with the help of structures such as pseudopodia in lower animals. ..
Carbon Dioxide - Occurrence
Jan Baptista van Helmont discovered the presence of carbon dioxide in the year 1630. Although the percentage of carbon dioxide in air is very small, it plays a vital role in nature. All the food that is produced on the earth is by photosynthesis, which employs carbon dioxide as the ..
Introduction
One of the primary objectives of agriculture is to produce food. In the entire history of agriculture, food production has remained a prime objective. Human food needs have undergone many qualitative and quantitative modifications in the last 50 - 100 years. Mainly, th..
Introduction
Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realize..
Coal, Petroleum and Hydrocarbons
Introduction - Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth an..
Cure and prevention of marasmus
Marasmus can be cured by giving the infants protein and carbohydrate-rich diet. Prevention of marasmus is only possible if the people have enough to eat and they are able to feed the infants nutritious food like cow's milk in the absence of breast milk. It is, however, very imp..
Introduction
The plants upon which we depend for the food we eat, and for the oxygen we breathe, depend in turn upon the soil. A good soil supplies the plants with the mineral elements they use. Vigorous, highly productive plants can be grown in solutions of fertilizer minerals in the ..
Result
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