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class-5 Environmental knowledge and festivals, and those who are memorable
Environmental knowledge is an important part of our lives, and it's essential that we educate ourselves and others about the impact our actions have on the planet. Festivals, on the other hand, are an important part of our culture and traditions, and they serve as a way to bring people together and celebrate important events. Here are some examples of festivals and events that are related to environmental knowledge and are memorable:

Earth Day: Earth Day is an annual event that is celebrated on April 22nd every year. It's a day to raise awareness about environmental issues and to promote sustainable living. It's a great opportunity to learn more about the impact of our actions on the planet and to find ways to make positive changes.

World Environment Day: World Environment Day is celebrated every year on June 5th. The theme for 2023 is "Ecosystem Restoration," which focuses on repairing and revitalizing damaged ecosystems. It's a great day to learn about the importance of biodiversity and how we can protect and restore our natural environment.

Holi: Holi is a popular Hindu festival that is celebrated in India and other parts of the world. It's a festival of colors and is celebrated by throwing colored powders and water on each other. However, the use of chemical-based colors has a negative impact on the environment. So, to make it more eco-friendly, people are encouraged to use natural colors made from flowers, leaves, and other plant-based materials.

Diwali: Diwali is another popular Hindu festival that is celebrated in India and other parts of the world. It's known as the "Festival of Lights," and it's celebrated by lighting diyas (oil lamps) and candles. However, the use of firecrackers during Diwali contributes to air and noise pollution. To make it more eco-friendly, people are encouraged to use eco-friendly firecrackers or avoid using them altogether.

Christmas: Christmas is a

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