Answer:
C.
crust, mantle, outer core, inner core
Explanation:
Th correct answer is letter A. Echo sounding is very useful for depth profiles where SONAR is used to determine the depth of water through the transmission of sound pulses. It is calculated by checking the interval between the mission and the pulse that is recorded within the SONAR device.
the sun/radiation (sorta)/ fusion/(yea pretty much the sun)
A conic map is the best bc it has very little distortion and straight latitude and longitude lines
