1 Subjects: “...natural dye...”

2 Subjects: “...natural products...”

3 Subjects: “...natural colors...”

4 Subjects: “...natural language processing...”

5 Subjects: “...natural protected areas...”

6 Subjects: “...natural gas...”

7 Subjects: “...natural gas...”

8 “... deterioration in soil fertility, environment, and irrational use of natural resources. At the same time...”

9 “... lives. However, from an environmental point of view, they consume a huge amount of natural resources...”

10 “... lives. However, from an environmental point of view, they consume a huge amount of natural resources...”

11 “... lives. However, from an environmental point of view, they consume a huge amount of natural resources...”