Answer:
To create offspring for the next generation of that species. This is how species continue to florish and survive.
I would explain s3x, but I'm sure if I did, I'd get terminated XD
A phosphide ion is an negatively charged potassium atom that has three additional electrons in its outermost shell. Phosphide ions are nonmetallic and can chemically react with a variety of metallic elements to form ionic compounds.