When you ____ to bed tonight, will you take your mobile phone with you? And if you ____ it with you, will it be near your bed? If your phone ____ usually near your head during the night, how do you feel in the morning? If you ____ tired and don't do well at school, this ____ unusual. ⠀⠀⠀ Five teenagers from Denmark found that on nights when they ____ with their phones near their heads, they can't ____ very well at school the next day. They wanted to know why, so they did an experiment with plants. They grew plants in two rooms. In one room there was a wi-fi router and in the other room, there wasn't. Before they started, the girls thought, 'If wi-fi and mobile phones ____ totally safe, then the plants ____ normally.' ⠀⠀⠀ After 12 days, they were surprised. The plants near the router didn't grow, and many of them died. But the plants in the other room were healthy and grew well. So, if wi-fi ____ plants from growing, what does it do to us? Because of what these girls did at school, scientists now want to find out.

Zero and First Conditionals

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