Answer:
1aNeon
b. positive charge.
c. As atomic number is equal to no. of protons and no. of electron and atomic number 10 element is Neon.
Positive charge as it have lost one of it's electron.
Atomic number = no. of protons = no. of electron and since electron can be shared loose or gain to develop charge it have loose on electron.
2a. 4 protons
b. 2 electrons
c. In question 2(a) the atomic number of Be is 4 so it would have four protons.
And as for question (b) it is said it have 2 charge which means positive charge would mean that it have lost 2 electrons and is left with 2 electrons which fulfill it's duplet configuration.
The human immunodeficiency virus (HIV) that causes the disease known as aids selectively infects helper T cells (CD4+).
This retrovirus also infects macrophages and dendritic cells. When CD4+ T cell numbers decrease below a critical level (due to the killing of this cells with different mechanisms), cell-mediated immunity is lost. As a result, the body becomes progressively more susceptible to infections, leading to the development of AIDS.
<span> HIV can be transmitted only via body fluids like blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, and breast milk, which means that people usually get or transmit HIV through sexual behaviours and use of the needle. For HIV infection, these fluids must come in direct contact with a mucous membrane or damaged tissue. Another way is to be directly injected into the bloodstream (from a needle for example).</span>
Intrusive is crystallized below the surface
<span>extrusive is when lava crystallizes on earths surface</span>
