Why do elements that are in the same group of the periodic table share similar properties? A. They all have the same number of electrons in the outer shell.
B. They all have the same atomic mass.
C. They are all metals.
D. They are all very reactive with other elements.

answer; i believe that the correct answer is (lung);

a

explanation:

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.