If it is a wet fly, then it may be that a change in color will change the catching.
If it is a dry fly, it floats on the surface, and the fish cannot see its color, just the pattern it makes on the water's surface.
absorption: having a change in energy from source to the receiver by its medium scattering by particles: occurs without a change in energy, but results in a change in direction of propagation
Chemical.
chemical
Penis
Increase or decrease in potential results in the change in direction of the flow of electric current.
There are many different kinds of expectations that can change how results are viewed. Expecting a reaction to produce a chemical in a certain amount of time can change how results are viewed for example.
:D
1. A physical change is reversible, a chemical change is not. For example, the freezing of water would be a physical change because it can be reversed, whereas the burning of wood is a chemical change - you can't 'unburn' it2. A physical change is a change in which no new substance is formed; a chemical change results in the formation of one or more new substances. Again, consider the previous examples: Freezing water into ice just results in water molecules which are 'stuck' together - it's still H2O. Whereas burning wood results in ash, carbon dioxide, etc, all new substances which weren't there when you started.
James A. Ballas has written: 'Prospect for change in Gallatin Canyon fishing' -- subject(s): Fishing
the independent variable is changed, and the experimental value measure. So you control the independent variable and change it to measure the results
Singapore changed into a major city because sir Standford raffles found Singapore and decided to change from a fishing village to a beautiful country]
The difference is that a change forms.