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FAQs on Mind Map: Our Necessities - Air, Water & Food - EVS for Class 2
| 1. What are the essential components of air that make it vital for life? |  |
Ans. Air is primarily composed of nitrogen (78%), oxygen (21%), and trace amounts of other gases such as carbon dioxide, argon, and water vapor. Oxygen is crucial for respiration in most living organisms, while nitrogen is important for plant growth as it is a key component of amino acids and proteins.
| 2. How does water contribute to human health and well-being? | |
Ans. Water is essential for maintaining bodily functions, including regulating temperature, transporting nutrients, and removing waste. It plays a critical role in digestion and hydration, impacting energy levels and cognitive function. Adequate water intake is necessary to prevent dehydration and promote overall health.
| 3. What types of food are necessary for a balanced diet? | |
Ans. A balanced diet typically includes a variety of food groups: fruits, vegetables, whole grains, proteins (such as meat, fish, eggs, and legumes), and dairy or dairy alternatives. This variety ensures that the body receives essential vitamins, minerals, and nutrients necessary for growth, energy, and overall health.
| 4. How can individuals ensure they have access to clean air, water, and food? | |
Ans. Individuals can ensure access to clean air by reducing pollution and using air filters. To secure clean water, it is important to use purification methods such as boiling or filtration and to support community water initiatives. For food, it helps to grow your own produce, shop locally, and support sustainable farming practices to ensure food safety and quality.
| 5. What are the consequences of a lack of air, water, or food? | |
Ans. A lack of air can lead to suffocation and death within minutes. Insufficient water intake can cause dehydration, which may result in serious health issues, including kidney failure and electrolyte imbalance. A prolonged lack of food leads to malnutrition, weakened immune function, and ultimately starvation if not addressed.
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