WE MUST TAKE STEPS TO PRESERVE NATURAL RESOURCES; OTHERWISE THE PLA...

4. - DE THI HSG
DE THI HSG
4. We must take steps to preserve natural resources; otherwise the planet will be in danger.A. Unless we take steps to preserve natural resources, the planet will be in danger.B. Unless we take steps to preserve natural resources, the planet will not be in danger.C. If we take steps to preserve natural resources , the planet would be in danger.D. If we take steps to preserve natural resources, the planet will be in danger.