If Mars’s atmosphere were 100% oxygen, would that make it like Earth’s? Yes; Earth’s atmosphere is mostly oxygen.
Yes; the amount of oxygen in Earth’s atmosphere changes.
No; Earth’s atmosphere is mostly nitrogen.
No; Earth’s atmosphere is all carbon dioxide.

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —

Tell me the iupac name of the following compounds:

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 ?