global birth rate, indicator for population growth and demographic trends, to increase dramatically, to grow or rise very quickly and significantly, to run out of, to use all of something so that none is left, to explore, to investigate something unknown or unfamiliar, research, investigation and study of materials and sources, solar power, Energy that comes from the sun’s rays, converted into electricity or heat, to invest, to put money, effort, or resources into something, to predict, to say what will happen in the future based on current information or evidence, to identify genes, To locate and recognize specific genes within an organism, cancer cells, cells that can invade other parts of the body and grow uncontrolled.

Big issues, 3B

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