help me please :-(
11 . it means listening the amount of trash/garbage produced .

12 . it refers to using materials more than once.

13 . it means creating a new material or product out of a trash/garbage .

14. those are wasted that can decompose or destroy by itself
15 . waste that are dangerous and harmful to people, plants and animals.

16 there are wasted that cannot be destroyed by any means even if borned.

17 . the status of health of a group of people.

18. aspects of healthy environment so where pupils are free from harm and injuries.

19 . aspect of health and environment where pupils are free from harm and injuries.

20. it is where teachers and adults give good example of kindness and respect in this young stage.

a. reusing
b . reducing
c. recycling
b . hazardous
e . non-biodegradable
f. biodegradable
g . physical environment
h. psychology environment
i . community health
j . waste management
k . clean classroom and facilities

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