Which best describes the purpose of President Kennedy’s Peace Corps program? to send volunteers interstate to learn about regions of the United States to help developing nations improve health care, agriculture, and other areas to work with other nations to promote peace between space programs to help keep democratic regimes in power in different parts of the world Mark this and return

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."