Age

ENVIRONMENTAL KNOWLEDGE

Preliminary

Partial Systemic

Complete Systemic

TOTAL

Frequency

%

Frequency

%

Frequency

%

Frequency

%

8 - 10 years

48

56.5

36

42.4

1

1.2

85

100

11 - 12 years

17

19.8

61

70.9

8

9.3

86

100

13 - 14 years

15

21.7

39

56.5

15

21.7

69

100