Read the dialogue.
—What do you think is the most important environmental issue nowadays?
— Well, in my opinion the most serious ecological problem today is the shortage of clean water.
— Why? Don’t we have enough water on our planet?
— My answer is “yes” and “no”. On the one hand, there is a lot of water on our planet. It is in oceans, seas, rivers and lakes. But on the other hand, very little water on Earth is good for drinking.
— Really? Why?
— Because rivers and lakes are polluted by factories and farms.
— Is there any solution to this problem?
— Of course, there is, but it requires cooperation of all people.
— So, what exactly can we do to improve the quality of water?
— First of all, we can ban pouring industrial waste into rivers and lakes. Besides, we can install different purifying systems.
— I am with you there. Fresh water is very important for human beings. But we shouldn’t forget about the ocean.
— I completely agree with you. Because the ocean gives us food, energy and minerals.
— You are right, but today the ocean also needs help because ships dump toxic waste, tankers leak and spill oil and boaters throw trash overboard.
— The situation may sound hopeless, but I’m sure we can do something about it.
— Yes, of course. For example, we can protect birds and marine life.
— But how can we do it?
— First, we mustn’t throw plastic bags or bottles in or near the water, because sea birds, turtles, whales and other sea animals often mistake plastic things for food and die. Besides, we can take part in beach clean-up projects.
— I can’t but agree with you. And I want to add that people should understand that their activities can affect oceans and seas.
— Exactly! People should understand that all water usually flows into seas and oceans, so what they do inland can affect marine life.
— I agree with you, but first of all we must learn more about the state of the ocean and what can be done to improve it.
— You are absolutely right!
Fill in the gaps:
1. Because rivers and lakes are polluted by and farms.
2. Fresh water is very important for beings.
3. Yes, of course. For example, we can protect birds and .