p.72

Front

responsible

Back

d. to have the duty of taking care of or looking after something or someone.

Front

protect

Back

g. to keep someone or something safe

Front

inform

Back

f. to tell someone about something

Front

preserve

Back

a. to keep something as it is

Front

recycle

Back

h. to collect used things in order to reuse them

Front

natural

Back

b. from nature

Front

knowledge

Back

e. information learned from studying

Front

reduce

Back

c. to make something less or smaller