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Ways in which crop rotation controls weeds include;Alternating different families of crops, makes it easy to control /remove the weedsWeeds specific to certain crops are easily controlled by alternating the crops of different type e.g. Striga specific to grass.Alternating difficult to weed crops with easy to weeds-maker it easily to control weeds.
Effects of the international dateline on time are;A day is gained if one travels across the IDL to the EastA day is lost if one travels across the IDL to the West.Info: In simple terms, IDL (International Date Line) is a line that runs from the north to the south in the middle of the earth. Read more about IDL.
Effects of mass wasting are;Leads to formation of scars which may leave the land exposed to agents of erosion.May lead to soil erosion leaving the land bare and infertile.May lead to formation of new landforms e.g depressions which may be filled with water to form lakesLandslides may change the course of a river leading to insufficient supply of water downslopeMay lead to formation of fertile soils at the foot of the slope making such places suitable for crop cultivationSome forms of mass wasting like landslides may bury people and lead to loss of lives and destruction of property.
Effects of the movement of tectonic plates are;They cause earthquakesCan lead to formation of fold mountainsCan lead to formation of new oceanic crustMay lead to formation of submarine island/volcanic
Negative effects of the development of motor vehicle transport include;It causes traffic jam especially in urban areas.It contributes to environmental pollution.It damages roads.It causes accidents leading to loss of lives/injuries.Increased crime rate