The reverse also is true-understanding the mechanisms underlying song learning provides insight into how song has evolved as a communication signal. Song has two primary functions: to repel other males from a defended space and to attract females and stimulate their courtship.
Explanation:
go ahead give it to the person below
The type of immunity that will trigger the defense and reaction in the same manner regardless of the organism invading is : Innate immunity
Innate has a non specific characteristic, which mean that as long as an object is identified as 'foreign' by your body, it will trigger a defense mechanism to eliminate that object
Its is b because you can argue about chores and how you thought he would not help
<span>What is selective mutism?
Selective
mutism is a complex childhood disorder characterized by a child's
inability to speak and communicate effectively in selected social
contexts, such as school. <span>These children are able to speak and communicate in environments where they are comfortable, safe and relaxed.</span></span>