Examlex
What substance is responsible for carrying red blood cell oxygen on to the tissues?
Lakes
Large bodies of water surrounded by land, usually freshwater, but they can also be salty in some regions.
Groundwater
Water that is found underground in the cracks and spaces in soil, sand, and rock, which can form aquifers from which water can be extracted for use.
Ice Caps
Large mass of ice that covers less than 50,000 square kilometers of land area, usually found in high-latitude regions; smaller than ice sheets.
Rivers
Large natural streams of water flowing in a channel to the sea, a lake, or another such stream.
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