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4. now he agrees with you: he, too, does not think that you need to apologize. 5. i finished work at eight, i went outside and saw that the snow had stopped falling. it was cold and the wind blew cold. 6. we always thought he was an honest man. no one would admit that he told a lie. 7. if you ask her, she will tell you about her vacation in greece. she has just returned from vacation. 8. hello! i know that you were sick last week. how are you feeling now? 9. we walked down the street and talked. suddenly, my friend stopped and said: "look, this is a new store. i have not yet been in it. let's go in there! " 10. let's call our friends! they have already returned from vacation. 11. he was going home, when a woman approached him and asked how to get to the pharmacy.
1. But rock phosphate is a finite resource and the biggest supplies are mined in politically unstable places, posing risks to the many countries that have little or no reserves.
2. Phosphate use has increased in the last 50 years as the global population has grown and the date when it is estimated to run out gets closer with each new analysis of demand.
3. With some scientists projecting that moment could come as soon as a few decades’ time.
4. “Phosphate supply is potentially a very big problem,” said Martin Blackwell, at Rothamsted Research, an agricultural research centre in the UK, and lead author of a new study. “Currently the population is growing and we are going to need more food.”
5. “In a few years' time, it could be a political issue with some countries effectively controlling the production of food by having control of rock phosphate supplies,” Blackwell said.
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