If you wanted to test whether or not photosynthesis was occurring, what gas would you test for, carbon dioxide or oxygen?

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

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?