The main responsibility for the reproductive system is
a: new creation of life
b: the development of secondary sex characteristics
C: the fe one time of the later life stages
D: the creation of new organs

Mars and earth have quite a few things in common. both are  terrestrial planets, both are located within the sun’s  habitable zone, both have  polar ice caps, similarly  tilted axes, and similar  variations in temperature. and according to some of the latest scientific data obtained by rovers and atmospheric probes, it is now known that mars once had a  dense atmosphere  and was covered with  warm, flowing water.

It would be cell respiration