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