[Siddharth]

I’m Siddharth Anoop of St Thomas Central School 7E.

I have some doubts about HIV and AIDS.

1) Are HIV and AIDS same❓

2) How do they affect the immune system❓

3) If a person gets infected with these, how much time would they have left to live❓

[Siddharth]

Hi , I’m Siddharth Anoop of St Thomas Central School 7E,

In an atom,

Electrons revolve around the nucleus which contains the protons and neutrons. So what is the use of neutrons there?

As protons contain positive charges and electrons have negative charge, they attract each other and that forms the gravity which keeps the electrons at a fixed distance from the nucleus. What is the use of the neutrons neutral charge??

• This reply was modified 2 years, 7 months ago by  Siddharth.