Expanded Definitions

A vaccine is a substance that stimulates the body’s immune response to fight diseases. Studies show that countries with high vaccination rates experience a significant drop in infection rates.

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A bridge is a structure built to connect two places. Without bridges, many communities would struggle with transportation, so engineers design strong, durable structures to solve this problem.

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Recycling is the process of converting waste materials into reusable products. When people recycle, they reduce landfill waste and minimize pollution, leading to a cleaner environment.

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A smartwatch is a wearable device that tracks time and various health metrics. Many athletes use smartwatches to monitor their heart rate, track workouts, and measure step count for better performance.

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A power bank is a portable device that stores electrical energy for charging gadgets. Like a spare fuel tank for a car, it provides extra energy when a smartphone or tablet runs out of battery.

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Solar panels are devices that convert sunlight into electricity. Studies indicate that homes using solar panels reduce electricity bills by an average of 40% annually.

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Exercise is any physical activity that helps maintain or improve fitness. Research shows that people who exercise at least 30 minutes a day have a lower risk of heart disease and obesity.

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An air purifier is a device that removes contaminants from the air. It is commonly used in homes and offices to reduce allergens, dust, and harmful particles, creating a healthier indoor environment.

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A tutor is someone who provides academic assistance to students. Studies have found that students who receive tutoring improve their test scores by an average of 20%.

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A helmet is a protective headgear worn for safety. Without a helmet, motorcyclists and cyclists are at higher risk of severe head injuries during accidents.

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