Wrong

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About two-thirds of the Earth is covered by water. That water might be found in oceans, seas, or lakes. Most of the water on Earth is salt water. Even though all organisms need freshwater, there is very little of it on the surface of the planet. A large amount of freshwater is frozen at the poles.

Water can be found in solid, liquid, and gas states on Earth. Our planet is lucky enough to exist in a very narrow temperature range that allows water to exist in all three states. A planet such as Mercury is far too hot to have water as a liquid. A planet such as Neptune is too far away from the Sun and too cold to have water as a gas. Other planets are missing atmospheres that would keep liquid water on the surface.

Water can boil to become a gas, but it can also evaporate. Evaporation is a slower process that happens when individual molecules move from a liquid to a gas state. When the Sun heats the oceans, water molecules evaporate. As the molecules rise and cool, they condense to become clouds.

Icebergs can float on water because they are less dense than the liquid water. There are two factors at work. The first is that the solid form of water is less dense than the liquid form. The second factor is that the freshwater icebergs are floating in the denser salt water of the oceans.

A manmade lake might be called a reservoir. An aquifer is an underground pool of freshwater. A swamp is a brackish region near coastlines where fresh and salt waters mix. A fjord is an inlet formed by glacial action.

All of these terms are used to describe flowing freshwater. The terms are used when describing different amounts of flow. Creeks carry the smallest amount of water and probably can't handle boats. Streams carry more water than creeks and can handle boats. Rivers are created when several streams, creeks, and tributaries combine. Rivers are the largest sources of flowing freshwater. Examples of large rivers include the Amazon, Nile, and Mississippi.

When rain falls on the surface, it is absorbed by the soil (usually). As time passes, the water percolates deeper and deeper. Eventually, the water cannot move deeper because of changes in rock type. An aquifer forms when the water collects in those areas. Humans often tap underground aquifers for sources of water. A freshwater well is one of those taps.

Even though the oceans of the world are all connected, the composition of the seawater is very different. There may be more or less salt in the water. There may be more or fewer living organisms. You will also find different amounts of chemical pollutants. It's all connected seawater, but very different on a local level.

A frog would probably be found in a freshwater marsh. Frogs are amphibians and like wet regions with sources of freshwater. Even though an iceberg has pools of freshwater, it would be much too cold for an amphibian to survive. Also, there wouldn't be much to eat. While a frog might survive in the ocean, you probably won't find it floating around the next time you go on a cruise. Conditions are much too difficult.

While clouds are extremely clean and are mainly made of water, there is a lot of other stuff in a cloud. You will find dust, chemical pollutants, and even small organisms that were swept up by the weather. When rains eventually come, the clouds dump those molecules and small objects with the droplets of water. Acid rain is an example of clouds filled with pollutants. They rain down acidic water which eventually kills plants and damages forests.

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