The visible light spectrum is usually said to consist of red, orange, yellow, green, blue, indigo, and violet. all of these colors combined make a) blue ocean. b) black skies. c) white light. d) a color wheel.

9. technology can bring both good and bad things. building a vertical farm can increase food supplies in cities (good), but it may cause unemployment in rural areas (bad). give another example of both the good and bad sides of a technological advancement (5 noints)