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Dolphins are regarded as the friendliest creatures in the sea and stories s of them helping drowning sailors have been common since Roman times. Their society is more complex than people previously imagined They look after other dolphins when they are ill, care for pregnant mothers and protect the weakest in the community, as we do. It is suggested that dolphins have a language but it is much more probable that they communicate with each other without needing words. Could any of these mammals be more intelligent than man? Certainly, the most common argument in favor of man's superiority over them that we can kill them more easily than they can kill us is the least satisfactory. Yet, the more we discover about these remarkable creatures, the less we appear superior when we destroy them.
means that they are better adapted to their environment than we are
shows that dolphins have a very sophisticated from of communication
proves that dolphins are not the most intelligent species at sea
does not mean that we are superior to them
dolphins are quite abundant in some areas of the world
dolphins have skills that no other living creatures have, such as the ability to think
it is not usual for dolphins to communicate with each other
dolphins have some social traits that are similar to those of humans
সে বই খানা টেবিলের উপর আলতো করে রাখল।
সে বইখানা টেবিলের উপর সাজিয়ে রাখল
সে বইখানা টেবিলের উপর সজোরে ঠেলে দিল।
সে বইখানা টেবিলের উপরে সজোরে ছুড়ে মারল
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