In one population of lizards, some individuals had leg bones that were longer than those of others. These lizards could climb more effectively than the ones with shorter legs, which helped them avoid predators on the ground. As time passed, the lizards with shorter legs died out, so every lizard in the population now has longer legs. Which process has led to this change in the lizard population?
- Aextinction
- Bnatural selection
- Cconservation
- Dartificial selection