شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 9770

An ecosystem is a group of plants, animals and other …… that live in the same area. An ecosystem also has non-living things – for example, ……, rocks, soil and sand.

There are many different kinds of …… in an ecosystem. A grassland, for example, is an ecosystem that has more than just grass. There are also other plants, insects, worms and many small living things in the soil.

Each living thing in an ecosystem has a role to play. ……, green plants make their own food. Humans and some animals eat, or consume, plants or other animals. Bacteria and other smaller living things break down …… plants and animals. They help return their parts to the soil, where new plants grow.

Mr. Radcliff, sitting on an old sofa, said nothing and seemed to be ... his thoughts on the meeting which was going to be held in his house about the property passed on to them.