Natural or human-made

Exercise and reference answers

Upper category

Natural

Lower category

Human-made

Items

1. Category

   Natural

   Item

   Forest

2. Category

   Natural

   Item

   Pond

3. Category

   Natural

   Item

   Lake

4. Category

   Natural

   Item

   Grassland

5. Category

   Human-made

   Item

   Garden

6. Category

   Human-made

   Item

   Crop field

7. Category

   Human-made

   Item

   Aquarium

8. Category

   Human-made

   Item

   Orchard

Instructions

Send each ecosystem to the natural track or the human-made track.

Explanation