Answer:
1. true
2. human immunodeficiency virus) is a virus that attacks the immune ... HIV is often spread by people who don't know they have it.
Formation of continental crust
The nervous system<span> is like a highway along which </span>your <span>brain sends and receives information about what is happening in the body and around it. This highway is made up of billions of nerve cells, or neurons (say new-rons) which join together to make </span>nerves<span>. A nerve is a fibre that sends impulses through the body.</span>
