Marcus spends a lot of time at his physician's clinic to deal with the pain in his abdomen. he has had several gastrointestinal tests as well as other diagnostic tests taken, but the doctors can find nothing to explain his pain. he spends much time worrying about his mystery pain is something serious. marcus is most likely experiencing a(n) disorder. multiple choice illness anxiety somatic symptom dissociative acute stress

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

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.