亚洲色怡人综合网站,国产性夜夜春夜夜爽,久久97AV综合,国产色视频一区二区三区

US EUROPE AFRICA ASIA 中文
China / China

Invasive plant chokes Pearl River

(chinadaily.com.cn) Updated: 2011-07-18 09:59
Invasive plant chokes Pearl River

Large amounts of water hyacinth choke areas of the Pearl River near Guangzhou, Guangdong province, photo taken on July 17, 2011. Without control, water hyacinth can be an invasive plant, which can cover lakes and ponds entirely, impacting on water flow, blocking sunlight from reaching native aquatic plants, and starving the water of oxygen, often killing fish. [Photo/Xinhua]

Previous Page 1 2 3 4 Next Page

Highlights
Hot Topics

...