In order to survive, all species of the deep must be able to____.

* Hướng dẫn giải

Dẫn chứng: 

Hundreds of species of marine life manage to survive even in the darkest depths of the ocean. These tenants of the deep have evolved some extremely ingenious devices for locating their food and enemies.

Where the light is very dim, some of these deepwater species have developed enormous eyes with almost telescopic lenses, very much like those of owls. Others, especially the fish that survive where there is no light at all, are quite blind but have developed long feelers that enable them to identify and collect stray bits of food that come within a considerable radius of them. 

Đáp án đúng: D. both b and c

- compensate for the lack of light: bù đắp cho việc thiếu ánh sáng

- locate food and enemies: xác định vị trí thức ăn và kẻ thù