You know birth rate decline doesn't mean population will drop suddenly and no one, absolutely no one, want to give birth, right? That's why it's called birth "rate", people still giving birth, just the rate is decline year after year.
To make it easier for you to understand, birth rate decline mean the number of people giving birth this year is lower than last year. For example, in 2024, China has a birth rate at 5.6%, meaning 6.39 births per 1,000, lower than 2023. In contrast, the mortality rate was 7.87 per 1,000 people.
In 2023, China has population of 1,422,584,933 people, in 2024, they have 1,419,321,278, a 0.23% drop. They still have a billion people, but if the rate continue like this by 50 years, they will have maybe about 1,264,967,374, seem like it still big right? But they lose the entire population equal to the whole Mexico. So don't just see the big number and think "oh they still have a billions, they will be fine"
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u/Solid-Quantity8178 6d ago
india and china have 3.5 billion people. That would make this map questionable