
1) Biological interaction
Found on
https://www.crosswordclues.com/clue/nocturnality

Nocturnality is an animal behavior characterized by activity during the night and sleeping during the day. The common adjective is `nocturnal`. Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. Such traits can help animals like the Helicoverpa zea moths avoid predators. Some animals, su.....
Found on
http://en.wikipedia.org/wiki/Nocturnality
No exact match found.