What does the development of hook-and-loop tape illustrate?

a. the role of luck in bringing new products to the market

b. the role of the microscopic world in creating new materials

c. the use of common sense to create new products

Where are chemicals found at work? a. only in cleaning products b. only in carpets and paint c. in every area of work d. only in food preparation submit

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat