There is water, pond scum, plant debris and other miscellaneous debris, and water-dwelling microbes.
Solution of Pond Water= Oxygen + Water
Pond water is not a pure substance.
The pond itself.
The pond itself.
Physical, but the pond does not chemically change - you still have water and pond goo, only the water has evaporated.
Some can be found in pond water but not all.
Assuming that there is water in the pond, 100%.
Surface of water
Because minerals and co2 is in plenty in pond water, hence plant grow well in pond water.
rocks, water, soil,
Walden Pond is a freshwater pond located in Concord, Massachusetts. It does not contain salty water.
Unicellular eukaryotes that live in pond water