2. match the synonyms. litter. throw away. poison. useless things. nuclear. turn out. waste. the world. appear. dangerous substance. disappear. using once again. environment. come out of sight. recycling .connected with atom energy.
Litter - throw away poison - dangerous substance nuclear - connected atom energy waste - useless things appear - turn out disappear - come out of sight environment - the world recycling - using once again
poison - dangerous substance
nuclear - connected atom energy
waste - useless things
appear - turn out
disappear - come out of sight
environment - the world
recycling - using once again