Does Oxygen have a cation or anion?

How does the study of genetic disorders such as pku biologists understand normal alleles?

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Which of these is a provisioning service people get from the ocean