Why do the terrestrial life forms required fresh water?
(b) Give two examples where fresh water can be found in the frozen form on the Earth.

Give three examples of fresh water ecosystem.

Give some examples of fresh water habitat and marine water habitat plants.

Give a few examples where water can be recycled and reused to improve the availability of fresh water.

The amount of fresh water of the earth frozen as polar or glacial ice is

Where do you observe Archimedes principle in daily life ? Give two examples.

Give an example of reaction where Two compounds in solution form gives white precipitate.

(a) Name the phenomenon which helps fresh water unicellular organisms (e.g., Amoeba) continuosuly gain water in their bodies. Also name the mechanisms by which these organisma throw out exces of water from their bodies. (b) Give at least two examples in plants where similar phenomenon in used to gain water.