Class 12 Zoology simulations · Reproductive Health

Population growth and doubling time

Choose a growth rate and see how fast a population doubles — the reason reproductive health matters.

Open the simulation

What to notice

Even a growth rate under 2% per year doubles a population in about 35–40 years.

Key relation

N = N₀e^(rt) ; doubling time ≈ 70 / (r in %)

Try this

Compare 1.7% per year with 1% per year over 50 years.

What you can change

• Growth rate: 0.5 to 3 % per year
• Years ahead: 0 to 100 years
• Starting population: 100 to 1400 million

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