Melting snow ponds and water found in rolls are examples of

Melting snow ponds and water found in rolls are examples of Surface water

Surface water is liquid on the surface of the planet such as in a stream, pond, wetland, or sea. It can be distinguished with groundwater and meteorological water.

Non-saline surface water practices are provided by rainfall and by from ground-water. It is dissipated through distillation, leakage into the area where it becomes ground-water, utilized by plants for transpiration, obtained by mankind for cultivation, living, industry etc. or released to the sea where it turns to be saline.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

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