1) Scientists have done a lot of research into ____ genes that cause cancer. 2) ____ power is good for the planet because it uses energy from the sun, which will never run out. 3) The ____ tells us how many babies are born each year. 4) An ____ happens when rock under the Earth moves suddenly. 5) The price of oil has gone up very quickly. It has increased ____ since January. 6) There has been a regular decrease in the price of gas. It has fallen ____ since January. 7) Scientists can't ____ when we will be affected by drought.

Science&research (3B Roadmap B1+)

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