Identify the correct statement about differences between rough and smooth endoplasmic reticulum (er).

The rough ER has ribosomes on its surface meanwhile smoothe ER does not.

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.