試題詳解

23. Each animal and plant in the world has its own environment, _______________ Meanwhile, each animal needs other animals and plant that live in the same environment. For example, polar bears eat seals and fish, seals eat fish, and big fish eat smaller fish in the Aretic. The small fish eat very small animals and plants in the sea. This is called a food chain.
(A)which provides them food they can consume.
(B)where they can live with ease.
(C)the place where it can live most easily.
(D)where it spends its all life in.