Factories and pollution have contaminated rivers and lakes, damaging the environment. The ozone layer that protects the Earth is being depleted by factories and plants, allowing more UV radiation. Deforestation has reduced trees that produce oxygen and control the climate, threatening animal and plant life. Various human activities like traffic, flying, and industrial pollution near Lake Baikal are endangering the planet by polluting air and water. Collective action is needed to protect the environment and wildlife.