The world’s population is getting bigger and ____. There’s a population explosion ____ some countries. I’m not sure ____ this is good or bad. The Earth can only support a limited number ____ people. One day, the world’s population will be too big ____ feed everyone. When that happens, we’ll have food wars and water ____. Many years ago, the population was controlled ____ famines, a shorter lifespan, disease and other ____ causes. We are richer now and so we can control how ____ we live. This is already causing ____ in some countries. Japan, ____ example, has almost more retired people than working people. This means workers can’t make enough money to look ____ old people.

Population

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