The bladder is an organ in the excretory system. what is the function of the bladder? a. to take in oxygen and excrete carbon dioxide b. to break down food into useful nutrients c. to pump blood throughout the body d. to store urine until it can be excreted

D. to store urine until it can be excreted

A(i think)

Explanation:

Earth is a satellite because it moves around the sun. The moon is a satellite because it moves around Earth. Earth and the moon are called "natural" satellites. ... These machines are launched into space and orbit Earth or another body in space.