What is Co-evolution? Give examples.

Explanation

The interaction between orgainsms, when continues for generation, involves reciprocal changes in genetic and morphological characters of both orgainsms. This type of evolution is called Coevolution. It is a kind of co-adaptation and mutual change among interactive species. Examples :
Corolla length and proboscis length of butterflies and moths (Habenaria and moth ).
Bird.ss beak shape and flower shape and size.