阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
Coral reefs are being planted in the deep seabed around Hainan Province, a famous tourist destination in China, as part of efforts 【小题1】 (preserve) the maritime (海上的) environment and promote green development.
Coral reefs cover about 2 percent of the area of sea floor and provide habitats for about 25 percent of 【小题2】 (creature). They play 【小题3】 important role in stabilizing ecology of the ocean, according to experts. They work as 【小题4】 (extreme) natural barriers to weaken the impact of waves crashing on the shore.
However, survival of coral reefs have been challenged due 【小题5】 changes in the maritime environment. In 2019, the Hainan South China Sea Institute of Tropical Ocean initiated a program to plant 【小题6】 (million) of coral reefs through professional breeding technology.
“It’s like 【小题7】 (plant) trees under the sea,” said Chen Hong, director of the institute. “Though they grow slowly, the seedlings no 【小题8】 (big) than fingernails may become coral reefs 【小题9】 size can surpass several soccer fields.”
In recent years, the team has planted over 200,000 coral reefs around Sanya city and Danzhou city. That quantity 【小题10】 (break) the national record of coral reefs transplantation for amount and survival rate.