Final answer:
Insects like mosquitoes that are active at dawn and dusk display a behavior known as crepuscular behavior. This means they are mainly active during the twilight hours and their activities may be influenced by factors such as temperature, humidity and availability of food.
Step-by-step explanation:
Insects, such as mosquitos, that are active at dawn and dusk show a pattern of activity known as crepuscular behavior. Crepuscular behavior refers to those organisms that are primarily active during twilight, that is, at dawn and dusk. This is different from being nocturnal (active during the night) or diurnal (active during the day). For example, mosquitoes are crepuscular, with their peak activity occurring during these twilight periods.
This adaptational behaviour can relate to a number of factors, such as exploiting certain feeding opportunities or avoiding predators which are active during full daylight or darkness. Insects may adjust their active hours based on factors like temperature and humidity, which can affect their survival and reproduction rate.
Learn more about crepuscular behavior