What does it mean to classify objects?

Sort objects into groups based on their similiarities.

Count objects to see how many there are.

Predict what will happen when you test objects.

Noise pollution: acceptable decibel levels (non-statutory)

NOISE POLLUTION

How to avoid noise pollution

H6EH-IIIfg-6- manage noise pollution

MEANING OF POLLUTION Pollution is the release of harmful substances into the environment and making it unsafe for human and animals. TYPES OF POLLUTION 1. WATER POLLUTION: This is the release of harmful substances into bodies of water. Examples of water pollutants are urine, bathing, excretion from man and animals, dumping of refuse into the rivers, lakes etc. 2. AIR POLLUTION: This is the release of harmful substances into the atmosphere making it unfit to breathe in. Examples of air pollutants are : smoke of vehicles, smoke from industries, oil burning, smoke from firewood, dead animals etc. 3. NOISE POLLUTION: This is a kind of pollution from the constant loudness of music or rowdiness. It disturbs the mind and prevents people from sleeping, resting or reasoning properly. THE FOLLOWING ARE THE EFFECTS OF POLLUTION 1. It makes the water unfit for drinking 2. It causes dysentery, typhoid fever and cholera. 3. It causes sneezing, blood poisoning, cough and lung diseases. 4. It causes headaches and sleeplessness. 5. It makes the air dirty and bad for breathing into the body. CONTROL OF POLLUTION ARE AS FOLLOWS: 1. Refuse should be dump in a proper place 2. Industries should be located far away from where people live. 3. Modern toilets should be built. 4. Regular cleaning of the surroundings.

Sound and noise that include common object sound, sound made by living beings, pleasant and unpleasant sound, noise and noise pollution

One of the worst things about living in a city is the high cost of living. Pros and Cons of Living in a City Living in a city offers numerous advantages, but it also comes with its own set of drawbacks. Here are the pros and cons of living in a city: Pros: Job Opportunities: Cities are often hubs for various industries and businesses, providing a wide array of job opportunities across different sectors. This can lead to better career prospects and higher earning potential for residents. Cultural Diversity: Cities are melting pots of different cultures, traditions, and lifestyles. This diversity enriches the social fabric of the city, offering exposure to various cuisines, arts, festivals, and languages. Access to Amenities: Cities typically offer an abundance of amenities such as restaurants, shopping centers, entertainment venues, healthcare facilities, educational institutions, and public services. Residents have easy access to these conveniences. Public Transportation: Many cities have well-developed public transportation systems, including buses, subways, trains, and trams. This can make commuting more convenient and reduce the need for personal vehicles. Entertainment and Recreation: Cities are known for their vibrant nightlife, cultural events, museums, theaters, sports venues, and recreational spaces. Residents can enjoy a wide range of entertainment options. Educational Opportunities: Cities often boast prestigious universities, colleges, and research institutions. This provides residents with access to quality education and lifelong learning opportunities. Healthcare Facilities: Major cities tend to have top-tier medical facilities and specialized healthcare services, ensuring that residents have access to advanced healthcare resources. Cons: Cost of Living: Cities are often associated with a higher cost of living due to expensive housing, transportation expenses, dining out costs, and other daily expenses. Noise and Pollution: Urban areas can be noisy and polluted due to heavy traffic, industrial activities, construction projects, and densely populated neighborhoods. Crowded Environment: Cities are densely populated, leading to crowded streets, public spaces, and public transportation systems. This can result in congestion and longer commute times. Limited Green Spaces: While cities offer many amenities, they may lack sufficient green spaces such as parks or gardens for residents to relax and connect with nature. Stressful Lifestyle: The fast-paced lifestyle in cities can contribute to higher stress levels for some individuals due to demanding work environments and busy schedules. Security Concerns: Certain urban areas may face higher crime rates compared to rural or suburban areas, leading to concerns about safety and security. Traffic Congestion: Heavy traffic congestion is a common issue in cities, leading to longer commute times and frustration for residents who rely on personal vehicles or public transportation. In conclusion, living in a city presents both advantages and disadvantages that individuals should carefully consider based on their lifestyle preferences and priorities.

NOISE POLUTION

Weathering and People Weathering is a natural process, but human activities can speed it up. For example, certain kinds of air pollution increase the rate of weathering Burning coal, natural and petroleum releases chemicals such as nitrogen oxide and gas, sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain. Acid rain rapidly weathers limestone, marble, and other kinds of stone. The effects of acid rain can often be seen on gravestones, making names and other inscriptions impossible to read. Acid rain has also damaged many historic buildings and monuments. For example, at 71 meters (233 feet) tall, the Leshan Giant Buddha at Mount Emei, China is the world's largest statue of the Buddha. It was carved 1,300 years ago and sat unharmed for centuries. An innovative drainage system mitigates the natural process of erosion But in recent years, acid rain has turned the statue's nose black and made some of its hair crumble and fall.

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