The nutrientsused in ecosystems by living organism operate on? A-open system.
B-closed system.
C-both

Which skill, if it cannot be performed by a 3-year-old child, should alert the nurse that the child may be developmentally delayed?

What did the first language sound like

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