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.
Capital punishment in Texas. Capital punishment is a legal penalty in the U.S. state of Texas. In 1982, the state became the first jurisdiction in the world to carry out an execution by lethal injection, when it put to death Charles Brooks Jr.. It was the first execution in the state since 1964. Texas, which is the second most populous state of the Union, has executed 548 offenders from the U.S. capital punishment resumption in 1976 to February 1, 2018, more than a third of the national total.