Respondents

Plant Materials

Structural

Materials

Natural

Elements

Man-made

Natural and Man made

Total

Students

68

33

11

40

88

240

Staff

41

12

11

31

65

160

Staff PHU

1

-

-

-

1

2

Total

110

45

22

71

154

402

%

27.4%

11.1%

5.5%

17.7%

38.3%

100%