The pelvis bone functions as an attachment point for legs. so, the pelvis bone found in dolphins is an organ. information about this organ tells us that
1) a. an analogous b. a homologous c. a vestigial
2) a. dolphins didn’t evolve from organisms with legs b. dolphins evolved from organisms with legs c. dolphins will have legs in the future .

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.

the answer is d hope this