math

the current population of a threatened animal species is 1 million, but it is declining with a half-life of 20 years. how many animals will be left in 60 years?

1. The answer will be 177,000

posted by Get Grammarly
2. nope. 60 years is 3 half-lives, so 1/8 will remain.

posted by Steve
3. thank you that is also what i got. 125,000

posted by shelly
4. I also got 125,000

posted by Joe

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