6. Which system statement about Earth will help organisms to survive? A Earth has no protective equipment like ozone B. Earth has layer water only for favorable climate C Earth has sub-surface water or molten rock that can circulate and replenish nutrients for organism's D. All of the above 7. What does Earth offers to human in order to sustain life? A Earth has abundant plant life. B. Earth has sufficient nutrients from ocean to land COnly A D. Both A and B​