Which would be a negative impact of the development of widespread commercial aviation in the modern world? a.) economic wealth is created in many countries b.)people can travel almost anywhere in a very short time c.) communicable diseases are spread rapidly around the world d.) the tourist industry is boosted in many locales

Wats iqpow pls write 20 words for an answer

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b

Which of the following words identify a question as absolute