Which of the following explains why global treaties are sometimes difficult to enforce? - Corruption of regulation funding
- Lack of commitment by leaders
- Ratification and support back home
- Unlawful enforcement of regulations

Ibelieve the answer is c. 

Idon't know how to do this but maybe ask your mom or dad

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.