During world war ii, the effectiveness of german u-boats and underwater mines was ended by the development of select one: a. acoustic countermeasures. b. sonar. c. centimetric radar. d. both sonar and centimetric radar. e. all these answers are correct.

When did stockpiles of strategic nuclear weapons begin to dramatically decline in the united states? a. the mid-1960s b. the mid-1970s c. the mid-1980s d. the mid-1990s

Which nation most to bail out greece’s failing economy?

How are the perspectives presented in the excerpts similar? they show the disappointment and fear mission control workers feel when the lunar module develops problems. they show the huge investment of time and energy mission control workers dedicated to the lunar module. they show how mission control workers view the lunar module as if it is the workers' very own child. they show the relief and excitement mission control workers feel when the lunar module lands on the moon.