explain how the digestive system and the circulatory system work together to make nutrients
available to the cells in your body.
give a simple but full answer

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.