One atom of silicon can properly be combined in a compound with a. four atoms of calcium. b. two atoms of oxygen. c. one atom of chlorine. d. three atoms of hydrogen.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )