2. The human body is made mostly of: a. carbon, oxygen, nitrogen, and hydrogen. b. oxygen, calcium, carbon, and hydrogen. c. hydrogen, iron, nitrogen, and oxygen.

How do ecosystem respond to nature disasters such as fires and floods

Match the types of competition to their descriptions

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