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Weapons of cold war include;Economic sanctionsPropagandaMilitary assistance to the enemy of opposite sides.Financial /technical assistance
Countries in which cold war broke into real war include;VietnamKoreaAngola
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.
Harmful effects of weeds are;Weeds lower the quality of pastures eg lantana camaraAquatic weeds affect fishingSome weeds are poisonous to man and livestock eg Datura stramoniumSome e.g witch weeds (spiga sp) are parasitic to cultivated crops eg maizeSome weeds lower the quality agricultural produceSome weeds act as alternate host for insect pest and others for diseases eg wild oats its an alternate host for rust.Some weeds are allelopathic ie produce poisonous substances that may suppress the growth or germination of cultivated crops.