Answer:
when it's dark, the iris widens and the pupil dilates, or gets bigger, to allow as much light as possible to enter the eye.
Explanation:
please mark me as a brainlist...

What is the impact of fishing on marine life?


overfishing can have an adverse effect on marine biodiversity. it wreaks havoc and destroy the environment and marine ecology and completely disrupt the food chain. For example, herring is a vital prey species for the cod. Therefore, when herring are overfished the cod population suffers as well.
Yes it does if you need an explanation lmk