10. The kidney is an organ that collects wastes and excess water from the blood and sends them to
the bladder where they are stored before being removed from the body. Which two systems work
together to perform this function?
(1) immune and respiratory
(2) circulatory and excretory
(3) skeletal and nervous
(4) digestive and circulatory

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

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.