How are atoms, elements, and compounds related?

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Jane is blood type a her husband is blood type b. jane is puzzled because their daughter is type o. explain how the daughter inherited a blood type that neither of her parents had explain your answer

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream