Body parts that function like each other, but are different in structure.
homologous
structures
vestigial
structures
embryos
analogous
structures

answer; i believe the correct answer to the above question is ( friction)

a = executive branch; b = judicial branch

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.