单选题A Pollution of coastal areas.B Rise in sea levels.C Exhaustion of sea resources.D Earthquakes and volcanoes.
题目
单选题
A
Pollution of coastal areas.
B
Rise in sea levels.
C
Exhaustion of sea resources.
D
Earthquakes and volcanoes.
Pollution of coastal areas.
Rise in sea levels.
Exhaustion of sea resources.
Earthquakes and volcanoes.