In which decade was the first commercially important synthetic polyamide synthesized?
A) 1920s
B) 1930s
C) 1940s
D) 1950s
B
You might also like to view...
The Siberian flood basalts (Russia) produced ________ of lava in about a million years, and covered some 3,9000,000 km3 (1,500,000 mi3) of land.
A. 3,000,000 km3 (700,000 mi3) B. 1,000,000 km3 (328,000 mi3) C. 5,000,000 km3 (1,640,000 mi3) D. 2,000,000 km3 (656,000 mi3)
What is the state of Economic Geography with respect to its overall approach?
A) Economic geography recognizes structural theories as dominant. B) Humanistic geography is the pre-eminent theory in economic geography today. C) Poststructuralists have become the leaders in economic geography theory. D) Logical positivism is the overwhelming approach in economic geography. E) Economic geography recognizes several different schools of thought.
Which of the following best describes the role of autotrophic (self-feeding) organisms in ecosystems?
A) They produce their own organic molecules, which can be broken down for energy. B)They consume other organisms for energy. C) Without heterotrophs, there would be no autotrophs. D) They produce their own inorganic molecules, which can be broken down for energy.
Which of the following was not a solution to overconsumption or over-consumerism that we discussed in class?
A. Thrifting B. Replacing devices as soon as a newer and more efficient models are available C. Collaborative consumption D. Peer-to-peer renting