Answer: C. the output of one is the input of the other
In an Immune disorder, our own defensive cells, get affected. In that situation, they harm us instead of protect us from any other foreign substance (pathogen), that's why it is so dangerous.
Hope this helps!
A shell is considered to be biotic since it comes from something living. Biotic describes something that is living or once living in a community. These are plants and animals. Shells are considered biotic since they are from living organisms. Hope this answers the question.
Every living thing is made of up cells
Also umm we can’t see the image can you post it?
by showing facts and a thought about it.