This meaning...what?
planting trees..
that is a simple answer. stop polluting the water you idiots.
Electric Cars, and Hybrid Cars
we have used less bad resources
stop diving your car or bus?
Whether or not people are here to do anything about it air pollution is a natural process, forest fires, volcanoes, dust storms. so far not much has been done to stop human induced air pollution.
lots of companies are trying to clean up the beach...
There is some evidence that suggests that whales beach themselves because of noise coming from navy ships. The navy probably won't do much about this. So there is nothing being done to stop noise pollution in oceans.
we can stop this pollution by throwing booms.
you can stop land pollution by recycling.
We told Whales to stop exploding their load into the ocean. That seemed to help.
You can stop polluting and pick up trash, even if you're not the one to litter.