When did the universe start according to the big bang theory

Our universe was created about 13.7 billion years ago

according to the big bang theory.

ability to bond woth oxygen

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a