verbs to nouns
nouns to verbs
find the opposite
paraphrases-find the term
add a suffix or prefix to form a new word
100

to recycle - (abstract noun)

recycling

100

harmful (using suffix)-find the opposite

harmless

100

garbage is disposed into the environment (trash or gas or oil etc...), nature is harmed

pollution

100

environment (change to an adjective)

environmental

200

to consume (noun person)

consumer

200

noise pollution- (opposite noun)

silence

200

rising temperature causes ice to dissolve

melting of ice caps

200

to renew (change to noun by adding suffix)

renewal

300

to produce (abstract nound)

production

300

clean/drinking water- (opposite, noun)

sewage, effluent

300
water is changing its' form into gas


evaporation (of water)

300

to destroy (add a noun by adding a suffix)

destruction

400

to emit (abstract noun)-ausstoßen

emission

400

to endanger- (opposite, verb)

to rescue, to save, to protect

400

global warming causes more damage in the ozone layer

green house effect

400

to sustain (add a noun by adding a suffix)

sustainability

500

to deforest (abholzen)-(abstract noun)

deforestation

500

waste, misuse, overuse of resources- (abstract noun)

reduction

500

people in developing countries hunger to death

starvation

500

to pollute (change to noun by adding suffix)

pollution