Which of the following is NOT a product of photosynthesis? A. Glucose

B. Energy

C. Oxygen

D. Carbon dioxide

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which characteristics can be used to differentiate star systems? check all that apply.

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.