You can block it. The unit won't heat or cool that room anymore though. The return air does effect supply air temp. And heat pump efficiency. With a 60 degree return air temp, the heat pump is more efficient then with a 70 degree return air temp.
We are simply getting contaminated causing otherwise healthy folks to lose the function of their kidneys and for a senior citizen who is already suffering sarcopenia this can be a death sentence because of the complexities associated with Renal Failure.
Video: Calpurnia in To Kill a Mockingbird: Character, Traits & Quotes Few characters in 'To Kill a Mockingbird' are as memorable as Calpurnia. This lesson explores Calpurnia's character, traits, and her role in this novel. Calpurnia in a Nutshell In Harper Lee's novel, To Kill a Mockingbird, one of the most memorable characters is the Finch family's black housekeeper, Calpurnia (also known as 'Cal'). Take a few moments to brainstorm a list of words and phrases you would use to describe Cal.