ВСТАВИТЬ ВЫБРАТЬ СЛОВАOne summer I went to Florida in the USA on/at/inholiday. I said goodbye to myFamily at the airport in London but/or/and Iflew to Miami. I stayed with my friendMaria. Her grandfather had a boat and we wanted/wanting/wantto go sailing. We had one/a/thelovely time sailing! One morningI decided to sit on the side of the boat.Suddenly, I fell off into the sea. I didn'tknow how to swim very/such/enoughwell and Ibegan to shout. Then, before/after/sinceminute I felt something/anything/nothing push menearer the boat.Him/I/Itwas a dolphinand he was trying to help me! Maria heardme shout and her grandfather pulled meback on the boat. After that I learned/learning/learnto swim and I will always love dolphins!​

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Many thousands of years before Christopher Columbus’ ships landed in the Bahamas, a different group of people discovered America: the nomadic ancestors of modern Native Americans who hiked over a “land bridge” from Asia to what is now Alaska more than 12,000 years ago. In fact, by the time European adventurers arrived in the 15th century A.D., scholars estimate that more than 50 million people were already living in the Americas. Of these, some 10 million lived in the area that would become the United States. As time passed, these migrants and their descendants pushed south and east, adapting as they went. In order to keep track of these diverse groups, anthropologists and geographers have divided them into “culture areas,” or rough groupings of contiguous peoples who shared similar habitats and characteristics. Most scholars break North America—excluding present-day Mexico—into 10 separate culture areas: the Arctic, the Subarctic, the Northeast, the Southeast, the Plains, the Southwest, the Great Basin, California, the Northwest Coast and the Plateau

 Biology is now a standard subject of instruction at schools and universities around the world.

 Most biological sciences are specialized disciplines: Botany, Zoology, and Microbiology. Biology is further divided into the fields according to the scale at which organisms are studied and the methods used to study them: Chemistry examines the fundamental chemistry of life; Molecular Biology studies the complex interactions of systems of biological molecules; Cellar Biology examines the basic building block of all life – the cell.