Tumors that are efficient seeders may kill people by promoting the seeding process, not because they have a higher exponential growth rate.

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Given their demographics, including an expected population of approximately 1.5 billion people by 2025, and their exponential growth rate, economists have long predicted the rise of China.

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The challenge is maintaining exponential growth without choking on traffic, pollution and crime that also grow at the same exponential rate.

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