1. The topic is about viruses, it's causes (HIV, AIDS) and results. The main idea consists of being more aware about certain viral diseases since they cause illness or even death.
2. The signal phrases in the paragraph are claims to be more aware ad careful. It is stating to stay away.
3. Immunodeficiency, AIDS, HIV etc.
4. I think we should be more careful to things that come against us, such as these dangerous viruses and destroy inner parts.
Mark me brainliestt :))
