Answer:
7 - a) a small river is called a <em>pond</em>
8 - b) fresh water conservation efforts
Answer:
If the frequency of a wave increases while its speed remains constant, the wavelength decreases i.e. the distance between successive crests decreases.
Explanation:
This layer of soil is called the A horizon.
Como se puede abrir una jarra de pepinos? Es muy dificil!