identifying genes, Scientists have done a lot of research into identifying genes that cause cancer, solar power, ... is good for the planet because it uses energy from the sun, which will never run out, global birth rate, The ... tells us how many babies are born each year, earthquake, An ... earthquake happens when rock under the Earth moves suddenly., increased dramatically, The price of oil has gone up very quickly. It has ... since January., falles steadily, There has been a regular decrease in the price of gas. It has ... since January., predict, Scientists can't ... when we will be affected by drought

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