B. Frequent due to fighting between bats
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contour farming:
Contour farming has been practiced for centuries in parts of the world where irrigation farming is important. Although in the United States the technique was first practiced at the turn of the 19th century, straight-line planting in rows parallel to field boundaries and regardless of slopes long remained the prevalent method. Efforts by the U.S. Soil Conservation Service to promote contouring in the 1930s as an essential part of erosion control eventually led to its widespread adoption.
A pathogen is a disease-causing microorganism whereas Microorganisms that do not cause disease are referred to as nonpathogens<span>.
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The correct answer is (c) Can move in any direction.
The movement of tectonic plates that led to the shaking of surface of the earth. The energy is released in the form of seismic waves. The place from where the earthquake starts is called focus. These waves are very intense. There are two more types of waves that are responsible for the movement of ground surface. The raylegh wave makes the ground surface move up and down. They cause most of the movement of ground. The side to side movement of ground surface is controlled by love wave.
Waves, generated by storms, wind, or fast moving motor craft, can cause coastal erosion, which may take the form of long-term losses of sediment and rocks, or merely the temporary redistribution of coastal sediments; erosion in one location may result in accretion nearby. The study of erosion and sediment redistribution is called 'coastal morphodynamics'. It may be caused by hydraulic action, abrasion, impact and corrosion by wind, water, and other forces, natural or unnatural. .