🔬 Biology · Reproductive Health · NEET

In the context of population growth, the doubling time of human population shortened from 200 years (to reach 2 billion) to approximately how many years to add the next billion after 5 billion?

Answer: 13 years.

A 50 years
B 35 years
C 13 years
D 25 years

Correct answer: C. 13 years

Explanation: The human population reached 5 billion in 1987 and 6 billion in 2000 - a doubling-time compression showing that adding the next billion took only about 13 years, demonstrating accelerating population growth.

Contraceptive methods span a spectrum from temporary/natural to permanent/surgical; condoms stand out as the only method offering STI protection alongside contraception.

Concept context

Understand reproductive health, family planning, contraception methods, STIs, population control, and assisted reproductive technologies.

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In the context of population growth, the doubling time of human population shortened from 200 years (to reach 2 billion) to approximately how many years to add the next billion after 5 billion?

Concept context

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