Running water. Streams, lakes, rivers, ponds, oceans- all affect the Earth's landscape.
There are some methods that differentiate waves; one thing is by its medium.
Electromagnetic waves did not require a medium for transmission such as in a
vacuum while mechanical waves require a medium to travel such as air, water or
anything that can serve as a transmission aid.
The most common sample of EM waves in
telecommunication is radio,
light and infra-red signals. An example of a mechanical wave is a sound
wave, which requires air to travel. Oscillating molecules made the
sound waves.
A(A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution)-alkaline
B(A compound that increases hydrogen ions (H+) when it is dissolved in a solution)-acid
C(An atom or molecule that has a positive or negative charge)-ion
D(<span>A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water)</span>-pH
