Yes, they just can't have relationships with them.
The nervous tissue hope it helps :3
They are called lymphocytes, which are a type of white blood cell. I hope this helps! :)
Your Answer Is...
It is a barrier to listening because if you're thinking of something else, than you're not paying attention to the person whose talking.
Glad I Could Help, And Good Luck!
My Brainly Name: AnonymousGiantsFan
Answer:
It's the first one
Explanation:
I just did the assignment!