Which sentence should be removed to improve the flow of ideas? (choices numbered in the paragraph) saving water the earth is a water planet. more than 70% of the earth is covered with water. in spite of this, the world is facing a water crisis. this is because only about 2.5% of the earth's water is drinkable.→(1)the rest of the earth is made up of ocean water that humans and most other living beings cannot drink.← this means that water is precious and we should strive work to conserve it. many people in the world still find it difficult to gain access to clean and safe drinking water. it is estimated that about 750 million people in the world today do not get the chance to drink clean water. →(2) as a result, many people fall sick or die due to water-related diseases.← that is why it is important that people who have access to safe drinking water try to save it when they can. →(3) most rivers and lakes are sources of fresh water. ← for instance, making sure the tap is not running when brushing teeth is an easy way to save water. → (4) another way to save water is to collect rain water and use it for bathing, washing, or cleaning.← it is also important that people get information about the urgent need to save water. spreading awareness about the ways to save water is an essential step in solving the problem.