D is probably right cos you are comparing data
The correct answers are: groundwater, wetlands, rivers, ponds .
Fresh water includes all water excluding seawater and brackish water. Fresh water is not the same as drinking water.
It is important for many organisms as habitat and living resource, plants and most mammals requires fresh water to live.
29. B
30. EXO means your EXporting it out of the cell so the answer would be C