polar bear small
The researchers are not exactly sure what is causing the increase in the amount of garbage there. It could be coming from very far away. Ocean currents can spread things over many kilometers. Another factor may be climate change. Ice cover in the Arctic has been shrinking. This has lead to more fishing and tour boats coming into the region. Some of the litter could be coming from these sources.
Ocean garbage is dangerous. Fish and other animals can die. Animals often suffocate when they try to eat plastic bags. Also, it is not healthy for people who eat the fish.
瘋狂英語 英語語法 新概念英語 走遍美國 四級聽力 英語音標(biāo) 英語入門 發(fā)音 美語 四級 新東方 七年級 賴世雄 zero是什么意思香港特別行政區(qū)美漢大廈英語學(xué)習(xí)交流群