pick up rubbish
We should pick up rubbish
cut down trees
We shouldn't cut down trees
waste energy
We shouldn't waste energy
destroy the rainforest
We shouldn't destroy the rainforest
save water
We should save water.
renewable energy
We should use renewable energy
recycle plastic
We should recycle plastic
switch off lights
We should switch off lights
recycle paper
We should recycle paper
cause pollution
We shouldn't cause pollution
protect endangered animals
We should protect endangered animals
plant trees
We should plant trees.