Hydrogen and Heluim are Elements,i don't get Hydrogen atom,helium atom?

You started off when 2 "haploid" cells (from mother + father) merged to form 1 cell with a complete ("diploid") set of DNA. This is called fertilization, the beginning of your life. From here on, you developed by dividing this huge fertilized cell into multiple cells.

These cells divided to form a yolk sac, the placenta (the organ that brought you nutrients, via umbilical cord, hence why you have a belly button), some cells committed suicide ("cellular apoptosis") to make space for the remaining cells to make your body. The cells divided in a very precise manner to produce an embryo. This embryo began to require energy and nutrients from elsewhere, and so it had to begin taking them from your mom's blood through the placenta.

Now, your mother ate more food so that she could provide the energy for herself AND the growing fetus. Here, you continued to grow and assimilate nutrients from your mother's diet shared through your mom and your blood across the placenta. You grew into a larger fetus.

You continued to grow for 9 months, you popped out of your mother's uterus in a process called childbirth, and got separated from your umbilical cord and placenta. Since then you have been processing your own nutrients! The VARIETY of atoms in your body however were produced deep within stars in a process called nuclear fusion.

The universe originally only had hydrogen and helium and lithium atoms which are not enough to make a human being. But, during the lifetime of many stars, they create new elements that would eventually be used to support life. Stars had to live for millions of years, explode and scatter their chemical contents, and these contents then had to collapse into new stars and planets as a result of gravity.

Only then could life begin. For instance, the iron in your blood does not come from the early cosmos. It comes from lighter elements fusing together to produce the heavy elements (such as iron), which are now present in your food and that end up carrying oxygen in your blood.

You are stardust. Of course, this only scratches the surface... The detail is endless at every size and corner of the world.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.