I have been getting incredibly interested in the universe and how it works lately, including astrophysics, biology, and where everything comes from. I've come to learn that many of the materials that make up the Human body, such as calcium and iron, can only be formed during nuclear fusion in stars. All those materials then get scattered throughout the universe when these stars explode, which is how they eventually came to form the Human body. So, in essence, all of us originate from the super nova explosions of stars. Now my question is what happens when different animals on Earth, including Humans, mate? That baby now has calcium in his bones and iron in his blood.
But that material can only form in stars so where did it come from? My guess is that these materials are already there in the sperm and as the pregnant mother ingests different foods with these materials, they get sent to the baby. So basically my theory is that it's a cycle. These materials were formed in stars, sent to Earth through a super nova explosion, over millions of years eventually created the first biological life forms and became embedded in the Earth. When people have babies this material gets transferred to the infant and then when those people die the materials go right back into the Earth. A never ending cycle of biology. However, I would like a more professional opinion if anyone is experienced in this subject.
