A primatologist observes 200 lemurs, 40% of which are juveniles. If 10% of juveniles migrate and 5 new adults join, what is the new juvenile percentage?

Sun, 19 Apr 2026 18:29:34 +0000

**A primatologist observes 200 lemurs, 40% of which are juveniles. If 10% of juveniles migrate and 5 new adults join, what is the new juvenile percentage?** A pattern of ecological insight and behavioral change is unfolding among a remote lemur population studied by a dedicated primatologist—200 lemurs observed in their natural habitat, with 40% classified as juveniles. As researchers track movement, social dynamics, and survival rates, this shifting age structure reveals broader insights into primate resilience and environmental impact. For those curious about ecological shifts and animal adaptation, these numbers reflect real-world trends gaining attention in conservation science and behavioral research across the U.S. today. Understanding why this shift matters begins with the data: 80 lemurs were juveniles in the original group, meaning 20 were adults. When 10% of juveniles migrate—about 8 individuals—their departure reshapes group composition. Meanwhile, 5 adult lemurs are newly joined by migration or birth, increasing adult numbers by 5 points. The initial 40% juvenile rate was based on a balanced group; this migration alters the ratio, but not through birth or death—only movement. Readers seeking clarity on how these dynamics influence survival patterns will find this shift both informative and emblematic of larger ecological questions. **How Does the Migration and Addition of Adults Change Juvenile Percentage?**