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Healthy food: Food is essential for our body for a number of reasons. It gives us the energy needed for working, playing and doing day-to-day activities. It helps us to grow, makes our bones and muscles stronger, repairs damaged body cells and boosts our immunity against external harmful elements like pathogens. Besides, food also gives us a kind of satisfaction that is integral to our mental wellbeing, but there are some foods that are not healthy. Only those food items that contain nutrients in a balanced proportion are generally considered as healthy. People of all ages must be aware of the benefits of eating healthy food because it ensures a reasonably disease-free, fit life for many years.  Switching to a healthy diet doesn't have to be a one-size-fits-all approach. You don't have to be perfect, you don't have to eliminate all of your favourite foods and you don't have to make any drastic changes all at once—doing so frequently leads to straying or abandoning your new eating plan. Making a few tiny modifications at a time is a recommended approach. Maintaining modest goals will help you achieve more in the long run without feeling deprived or overwhelmed by a very drastic diet change. Consider a healthy diet as a series of tiny, accessible actions such as including a salad in your diet once a day. You can slowly add additional healthy options as your minor modifications become habitual. Cultivating a positive relationship with food is also crucial.

Healthy Mind: No matter what hardships and hurdles we come across, life is meant to be positive and happy. To enjoy and appreciate the beautiful things of life we need the energy and zest for life. This can happen only when the body is healthy enough to take on the hardships of life. An overweight person, who cannot walk through the garden path, might not enjoy the fragrance of the flowers or enjoy the sight of a mother bird feeding her chicks, primarily because his mind would be occupied with various ailments he might be suffering from due to his obesity.

When we feel ill, it brings on frustration and this often causes us to be irritated with the smallest mistakes that others make. We become rude and it can start off a chain of unpleasantness all around. As most of our activities are governed by the mind, it is very important to keep our minds fresh, alert and in a positive frame. It is small wonder then that ancient schools of martial arts like Kung-fu, Taekwondo and Kalariapattu, laid great stress on meditation to strengthen the mind.

Cleaners of environment Bacteria: coli bacteria (a common lab bacteria) with genes that allowed the microorganisms to not only survive in mercury but to remove it from waste sites.

The microorganisms decompose dead organic wastes of plants and animals converting them into simple substances. These substances are again used by other plants and animals. Thus, microorganisms can be used to degrade the harmful and smelly substances and thereby cleans up the environment.

The term 'microorganisms' include bacteria, fungi, viruses and protozoa. ... But, it is a fact that microorganisms are useful to us in many ways. Microorganisms help in the production of many food iter making medicines, keeping the environment clean, in manufacturing and in research.

A microorganism is a living thing that is too small to be seen with the naked eye. Examples of microorganisms include bacteria, archive, algae, protozoa, and microscopic animals such as the dust mite.

Biofuels a boon to society: Biofuel can be broadly defined as solid, liquid, or gas fuel consisting of, or derived from recently dead biological material, most commonly plants. This distinguishes it from fossil fuel, which is derived from long dead biological material. Biofuel can be theoretically produced from any (biological) carbon source. The most common by far is photosynthetic plants that capture solar energy. Many different plants and plant-derived materials are used for biofuel manufacture. Biofuels are used globally and biofuel industries are expanding in Europe, Asia and the Americas. The most common use for biofuels is as liquid fuels for automotive transport. The use of renewable biofuels provides increased independence from petroleum and enhances energy security. There are various current issues with biofuel production and use, which are presently being discussed in the popular media and scientific journals. These include: the effect of moderating oil prices, the "food vs fuel" debate, carbon emissions levels, sustainable biofuel production, deforestation and soil erosion, impact on water resources, human rights issues, poverty reduction potential, biofuel prices, energy balance and efficiency, and centralised versus decentralised production models.

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