Explorers used this instrument to measure the position of the stars, which in turn helped with their travels.

97 points what types of changes have been made in the united states to protect people from earthquakes? a. communities are no longer located along fault lines. b. building codes ensure that structures can withstand shaking. c. warnings go off when an earthquake is expected, and people evacuate the area. d. barriers have been built to prevent flooding by a tsunami.

Ineed ! what is the best way to combat test anxiety? a. prepare thoroughly for the test c. picture yourself getting an a b. take deep breaths during the test d. none of these

The principal effector function of igm is