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A curriculum for young people (grades K-3 to K-12) to help them understand & relate to each other & to earth's natural resources. This guide takes an ecological

With the rapid development of Chinese urbanization in the 21st century, "urban diseases" become more serious, mainly manifested in water environmental pollution

Color can attract mates, intimidate enemies, and distract predators. But it can also conceal animals from detection. It is an adaptation to the visual features