(Passive Voice)
1. Read the fragments below and mark the correct answers.
'' I. Most nutrients in tropical rain forests are stored in the vegetation rather than in the soil, which is very poor.
II. An estimated 100 acres (40 ha) of rain forest are lost every minute.
III. …half of all species are found in tropical forests, but many of these species have not ye t been identified.''

a. The subjects of the fragments are underlined. They are
( ) the receivers of the actions ( ) the performers of the actions.

Alguém pode me ajudar, desde já agradeço ;)