Use any resource to define the following vocabulary terms from the unit: Chemical change
product
chemical reaction
reactant
dissolve
solution
energy
temperature
heat
thermal energy
mixture
Physical change
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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.