Why are proteins an essential nutrient to include in a balanced diet?

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

How does the carbon cycle involve an exchange of carbon