What adoptions do trees have in the rainforest Deep roots and spread their roots out over a great distance
Deep roots that do not spread out over a great distance
Short roots and spread out over a great distance
Short roots that do not spread over a great distance

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.