We all know the world has its problems, particularly where the environment is concerned. This can occur through the release of industrial waste, for example from mining and metal refining activities, into streams and rivers, from where it may make its way into the ocean. A variety of toxic metals can affect aquatic and marine life and may accumulate in the food chain, posing a threat to humans. Another major source of water pollution is fertilizers, which can be washed into rivers and lakes from farmland, causing a phenomenon known as eutrophication. Nitrates and phosphates, present in fertilizers, and essential for plant growth, can also promote uncontrolled multiplication of algae in lakes, causing an “algal bloom.” This reduces water quality and oxygen levels, and may kill fish. Мы все знаем, что мир имеет свои проблемы, особенно если речь идет о окружающей среде. Это может произойти в результате выброса промышленных отходов, например, от горнодобывающей и металлургической деятельности по переработке нефти, в ручьи и реки, где он может внести свой путь в океане.Разнообразие токсичных металлов могут повлиять на водной и морской жизни и может накапливаться в пищевой цепи, что создает угрозу для людей. Еще одним важным источником загрязнения воды является удобрения, которые можно стирать в реки и озера от сельскохозяйственных угодий, в результате чего явление, известное под названием эвтрофикации. Нитраты и фосфаты, присутствующие в удобрениях, и необходимые для роста растений, а также может неконтролируемому размножению водорослей в озерах, вызывая "цветение воды". Это снижает качество воды и кислорода уровни, и может убить рыбу.
1 A wallet was stolen the previous week by the thief.
2 Notebooks were brought by the strudents the previous Monday.
3 Two competitions were won by my sister the previous year.
4 A new staff will be employed by the company by the end of the year.
5 Delicious pancakes are made for breakfast by Simon.
6 Energy is made by people using wind.
7 You will be rung by somebody the next morning.
8 Chinese is spoken by her with her family.
9 My dad's car will be repaited the following day by him.
10 Animals were fed by the vet before their operation.
11 The train is caught by Sofia every single day at 10a.m
12 Too many devices are bought by the parents to educate their children.
13 A stray dog was found by me that evening.
14 A new computer will be bought by Jane the following month.
15 Escher's art work is admired by millions of people all over the world.
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