Is CO2 an atom or a molecule and is it a pure element or a
compound?

a. Atom, Compound
b. Molecule, Pure element
c. Molecule, Compound

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 ?

The three types is stress that act on earths rocks are compression, tension, and

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin