16 According to the passage, what is happening to worldwide coastal habitats?
(A) They are destroyed in wars.
(B) They are thriving.
(C) They are under threat.
(D) They remain the same as usual.

Tourism旅遊業 has seriously damaged fragile ecosystems like the Alps阿爾卑斯山脈—the winter skiing playground of Europe—and the trekking以長距離步行作為消遣的活動 areas of the Himalayas喜馬拉雅山脈.

Worldwide, it poses a serious threat to coastal（位於）海岸的；臨海的 habitats（動植物的）生長地，棲息地 like dunes沙丘, mangrove紅樹（一種熱帶喬木，生於水邊，盤錯交織的部分根部露於地上） forests, and coral reefs珊瑚礁.

It fuels燃料 a booming繁榮 and usually illegal trade in the products of threatened wildlife, from tortoise-shells龟甲 and corals珊瑚 to ivories象牙.

Its “consumers消費者；顧客” inevitably不可避免 bring their habits and expectations期盼；盼望 with them—whether it is hot showers and flush沖洗（抽水馬桶） toilets or well-watered greens for golfers高爾夫球（運動）.

In the Himalayas, showers for trekkers背包客 often mean firewood, which means deforestation大面積砍伐森林；人為毀林.

In Hawaii and Barbados, it was found that each tourist used six and ten times as much water and electricity as a local.

In Goa, villagers forced to walk to wells for their water had to watch helplessly無助的，無奈的 as a pipeline to a new luxury hotel was built through their land.

Over the past decade, golf, because of its appetite食慾，胃口 for land, water, and herbicides除草劑, has emerged as one of the biggest culprits過失者；責任人, 問題的起因；罪魁禍首, so much so that “golf wars” have broken out in parts of Southeast Asia; campaigners運動倡導者；活動家 in Japan, one of the chief exponents擁護者 of golf tourism, have launched发射 an annual World No Golf Day.