Item 18 Which word is described by this statement?

Scientists use this to measure the magnitude of an earthquake.

shield

magma chamber

Richter scale

seismograph

Which of the following studies is linked most directly to the establishment of the national research act in 1974 and ultimately to the belmont report and federal regulations for human subject protection? a. the public health service tuskegee study of untreated syphilis in the negro male.b. stanford prison experiment (zimbardo).c. tearoom trade study (humphreys).d. the harvard t3 study.

Which two words in this excerpt from the count of monte cristo can be used as synonyms to determine the meaning of the word grotto? dantès entered the second grotto. the second grotto was lower and more gloomy than the first; the air that could only enter by the newly formed opening had the mephitic smell dantès was surprised not to find in the outer cavern. he waited in order to allow pure air to displace the foul atmosphere, and then went on.

New communication technologies, improved transportation, and advanced military weapons made it possible for countries to speed up acquiring territory. rule large amounts of territory. fight off competition from opposing nations. expand their economies, which aided in conguest.