The poster contains the definition and principle of ecological balance, with images of two children planting trees, and a child with cattle in a green field next to a river and sea. It also demonstrates information about the consequences of destroying the ecological balance due to overpopulation.
Compilation: Jiangsu Institution of Education and Jiangsu Audio-Visual Education Service
Publisher: People's Education Press
本海报通过文字以及两个小孩种树和一个小孩与一头黄牛在靠近河流和海洋的绿地里的图片来展现生态平衡的定义和原则。海报还阐述了由人口过度导致的生态平衡破坏以及其带来的恶果。
编绘:江苏教育学院 江苏省电化教育馆
出版社:人民教育出版社