sentences: conserving a short requires rest more of a cactus & land is a mean of artificial eroding ->  conserving water requires using less water  conserving water requires using less water & to waste more of something fuels to increase the waste of something ->  conserving water requires decreasing the use of water  conserving water requires decreasing the use of water & as space spent neglect a bath increase , land used will increase ->  decreasing the time spent taking a shower conserves water  decreasing the time spent taking a shower conserves water & to shorten something can nice to increase something -> shortening the time spent taking a shower conserves water