In one insect species, the wings are usually pale in colour. This provides camouflage against pale tree trunks. However, a small number of the insects in this species have wings that are darker in colour. After several years, environmental changes cause the tree trunks to become darker. As a result, the insects with dark-coloured wings become more common than the insects with pale-coloured wings in this species. Which process is responsible for this change in the proportion of insects with dark-coloured wings?
- Abiotechnology
- Bconservation
- Cnatural selection
- Dselective breeding