Question

18. It is obvious that ocean life to the biodiversity of the earth.

A. contributes B. disposes

C. deepens D. rescues

19. Salmon are . Every year, they travel long distances up rivers and streams to lay their eggs. A. assistants B. naturalists C. migrants D. survivors

Answer 1

18. A. contributes

19. C. migrants

Answer 2

18. It is obvious that ocean life to the biodiversity of the earth.

A. contributes                 B. disposes

C. deepens                     D. rescues

19. Salmon are . Every year, they travel long distances up rivers and streams to lay their eggs.

A. assistants               B. naturalists            C. migrants           D. survivors