I think it is the second answer, sorry if it is wrong/didn’t help.
(a) very frequent use of something so that it stops being effective; an over-use.
Answer:
This suggests that the moustache is a releaser for aggression.
Explanation:
<em>Fixed action patterns</em> are instinctive programmed responses in different species that are triggered by a specific external sensory stimulus. These stimuli are called sign stimuli or releaser. When the sign occurs, the animal starts a sequence of acts in response to the stimulus and continuous until the series of actions is completed.
The black feathers resembling a mustache in a <em>Northern flickers</em> male are an external sensory stimulus. This trait that can provoke another male to respond aggressively, as a f<em>ixed action pattern</em>.
This trait might be considered as an <em>unconditioned stimulus</em>, which <em>provokes an unlearned or reflex reaction</em>. These aggressive responses are triggered by reflex.
Answer:
Explanation:
An unfertilized egg is shed from the body during menstruation. The lining of the uterus become thicker, getting ready in case of pregnancy.
It is not a fun experience :(
Answer:
the tips of the steams and roots, also known as an apices
