Fill in the missing words (вставьте пропущенные слова): decomposers, photosynthesis, decay, community, environment, a food chain, decay, grassland, producers, raw, consumers, exist
1. Ecosystem is a natural … and its … .
2. … products are continuously exchanges with … materials.
3. Green plants are … because they make their own food through a process called … .
4. Humans are … because they eat plants and animals.
5. Bacteria are… .
6. … is a process in which producers, consumers and decomposers feed on each other.
7. Ecosystems … in different kinds of lands, in lakes, streams and oceans.
